The following is a list of characters in the 1961 novel Catch-22 by Joseph Heller.

Significant characters

Other characters

• Appleby – A fair-haired young pilot from Iowa. He is described as being "as good at shooting craps as he was at playing ping-pong, and he was as good at playing ping-pong as he was at everything else." Appleby's character appears to represent those who thrive to a certain extent within a bureaucratic system and feel threatened by others who do not play along as much as they would like them to. He follows regulations without question and does everything he is supposed to do, managing to succeed with minimal effort at whatever he does. He believes in God, the Motherhood, and the American Way of Life.
• Captain Black – Because of the lack of risk involved in not flying missions, Captain Black wanted to take over Major Duluth's position as squadron commander when the Major was killed over Perugia. He was thwarted in this by the appointment of Major Major to the position. Captain Black constantly mocks his fellow countrymen at the Pianosa airbase when they are faced by dangerous missions by telling them to "eat your liver." Since he is the camp's intelligence officer, he is not on combat duty and can therefore maintain his gleeful attitude to the men risking their lives in the air. Black is a paranoid anti-Communist and pressures all the men to take loyalty oaths, but out of personal spite prevents Major Major from taking one. He deliberately seeks out Nately's Whore on his visits to Rome and brags about their trysts to Nately.
• Colonel Cargill – Before the war, Cargill was a successful, though completely untalented, marketing executive who was well known for being completely terrible at his job. In the Air Force, Colonel Cargill provided his legendary lack of skills as General Peckem's troubleshooter.
• Clevinger – A highly principled, highly educated man who acts as Yossarian's foil within the story. He is a Harvard graduate whom Yossarian characterises as having "lots of intelligence but zero brains". Clevinger is very unmoving in his own opinions and is further described as such: excessively philosophical, politically a humanitarian, lacking in social tact, and a person of all facts but no passion. His optimistic view of the world causes Yossarian to consider him to be a "dope," and he and Yossarian each believe the other to be crazy. Yossarian also comments that Clevinger crusades against bigotry by balking in its face, proving Clevinger to be an extremely submissive character. During cadets course he is brought to trial and found guilty on phony charges by Lt. Scheisskopf. His plane mysteriously vanishes in a cloud and he's never seen again.
• Lieutenant Coombs – The previous assistant intelligence officer. He dies in the same plane crash that kills Kraft.
• Nurse Cramer – Nurse Duckett's best friend. She is a shapely, pretty, young girl who refuses to have any relations with the men at all, so Yossarian dislikes her. After Nurse Duckett starts a relationship with Yossarian, puritanical Nurse Cramer stops speaking to her.
• Major Danby – The fighting group operations officer. An intellectual college professor with a passive and somewhat melancholic yet serene outlook on life who sees himself as a poor match for the armed services due to his lack of aggression. He briefs the airmen on upcoming missions and often acts as a mediator for disputes between enlisted men and as a confidant to most of the officers.
• Mrs. Daneeka – Doc Daneeka's wife. When the doctor is mistakenly declared dead after listing himself fraudulently on a flight manifest for a doomed flight, she finds herself suddenly rich and widowed, and moves away, leaving no forwarding address.
  Further information: Doc Daneeka
• Major — de Coverley – Major — de Coverley has a terrifying visage in the Biblical tradition, such that men will do his desires without his even saying a word. No one dares ask his first name, and the exact nature of the Major's duties within the bomber group is uncertain. He is Major Major's executive officer, but at the squadron base in Pianosa his only official duties are pitching horseshoes, renting apartments for the soldiers on rest leave, and kidnapping Italian laborers to help around the base. He also rapidly put an end to Captain Black's "Glorious Loyalty Oath Crusade" by demanding “gimme eat” then demanding that they “give everybody eat”. His frequent appearance during the fall of major cities makes him an object of interest to intelligence agencies on both sides, neither of which can identify him.
• General Dreedle – The commander of the USAAF base in Pianosa, Dreedle is a blunt and ill-tempered man. He is an archetypal no-nonsense military man who does not care what the men under his command do as long as they fight and die unquestioningly when given orders. Despite this, he is generally apathetic to the war effort (having lost all drive after he was made General and he found he had "nothing more to aim for") and now mostly busies himself with harassing his son-in-law, Colonel Moodus. He despises Moodus simply because he hates weddings and does not wish to attend another one. His arch-rival is General Peckem, head of Special Services in Rome; the two men frequently have their disputes mediated without their knowledge by the desk clerk, ex-P.F.C. Wintergreen.
• Dobbs – Originally a healthy young man, the effects of excessive combat missions have shot Dobbs' nerves, and when the narration of the book begins he is emotionally unstable and physically spent. He is described as being one of the worst pilots in the corps and his mid-air panic leads him to snatch the controls of the plane away from Huple, leading to the death of Snowden. He plots to kill Colonel Cathcart but will only do it if Yossarian tells him it's a good idea, which Yossarian never does. He accidentally collides with Nately's plane, killing both crews.
• Nurse Sue Ann Duckett – At the start of the novel Nurse Duckett does not like Yossarian; later, she has a relationship with him, jeopardizing her friendship with Nurse Cramer. She breaks off her affair with Yossarian when she decides to marry a doctor, and realizes she should not jeopardize her chances by carrying on openly with Yossarian.
• Lieutenant Dunbar – An airman stationed at the same base as Yossarian, on the island of Pianosa. He and Yossarian seem to have similar personalities, and so they make fast friends. Like Yossarian, Dunbar's chief goal is to prolong his life to whatever extent possible, often by cultivating boredom. He frequently accompanies Yossarian in the hospital, faking injuries to stay out of combat like his friend does. He is later 'disappeared' by the army when he becomes rebellious and unstable.
• Major Duluth – The previous squadron commander. He was killed over Perugia.
• Dori Duz – Scheisskopf's wife's close friend. A lively “tart” who has relations with all the men in the company once as she refuses to sleep with anyone she finds to be mediocre again. Thus, she sleeps with Yossarian once and he spends a small part of the novel pining after her since he knows she doesn't want him.
• Captain Flume – Captain Flume is the squadron's public relations officer, until he moves out of the trailer he shares with Chief White Halfoat after Halfoat jokingly threatens to slit Flume's throat open from ear to ear. He spends most of the book living like a hermit in the woods, which gradually drives him insane.
• Giuseppe (the soldier who sees everything twice) – A delirious soldier who creates a panic in the hospital by shouting, "I see everything twice!" Yossarian imitates him (by seeing two fingers regardless of whether a doctor holds up one, two, or none) and later impersonates him when he dies. The soldier's family does not notice that Yossarian is not their son.
• Gus and Wes – Doc Daneeka's two orderlies, whose main activity is to paint airmen's gums and toes purple with gentian violet solution. They are extremely efficient and have a list of steps on determining if someone is sick so that there will be certainty when diagnosing. Daneeka hates them because they refuse to declare him ill so that he can go home.
  Further information: Doc Daneeka
• Havermeyer – Havermeyer lives in the tent next to Yossarian's, and according to Colonel Cathcart he is "the best damn bombardier we've got." This was because he insists on flying his plane dead straight to, over, and past the target despite any anti-aircraft fire he receives. Yossarian despises him because of his insistence in putting his (Yossarian's) life at stake. He is also slightly unstable and enjoys shooting mice at night with the gun he stole from the dead man in Yossarian's tent. He and Appleby are the most hated enlisted men in the company. However, despite their love of duty, even Havermeyer begins to hate the constant raising of the number of missions and even considers going on strike with Yossarian by the end of the novel. He also shows a dislike of Appleby himself.
• Huple – A fifteen-year-old pilot who lied about his age to get into the Army. He shares a tent with Hungry Joe on the wrong side of the railway tracks and is shy and nervous, but is a thoroughly idealistic patriot, which is why Yossarian feels sorry for him; he feels he'll probably die too young. He has a cat that constantly sleeps on Hungry Joe's face. He owns a watch that Hungry Joe forces him to keep in a sock. He is the pilot flying when Snowden dies over Avignon.
• Hungry Joe – A perverted soldier who is noted for constantly trying to photograph women nude, claiming to be a photographer for Life magazine (which, ironically, he was before the war, although none of his pictures developed correctly). He is the only pilot who consistently finished the required number of missions (but was forced to continue flying as his paperwork was always delayed until the flight limit was elevated) and has screaming nightmares until he's ordered back onto combat status. He enjoys randomly choosing diseases to worry about at will. He dies when he's suffocated by Huple's cat.
• Sergeant Knight – The turret gunner on Yossarian's plane; he accidentally begins a panic prior to the Bologna operation when he brings extra flak jackets, causing everyone to think the target is deadly.
• Corporal Kolodny – Captain Black's despised assistant. He erroneously reports that Bologna has been captured by the Allies after Yossarian surreptitiously redraws the lines on the battle map. Kolodny is forced to sign hundreds of loyalty oaths in Black's name each day.
• Lieutenant Colonel Korn – Colonel Cathcart's intellectual assistant and right-hand man. Korn appears alongside Cathcart throughout the novel and it becomes clear to the reader that Korn does most of the thinking and most of the work for Cathcart, who only takes the credit. Korn is portrayed as much more relaxed and less ostentatious than his superior, but much more sadistic and cynical. Much like Cathcart he has ambitions for higher military ranks but chooses to be below Cathcart and remain outside the limelight so that, if something goes wrong, Cathcart will take the fall instead of him.
• Kraft – A man killed at the bombing of a bridge at Ferrara. Yossarian blames himself, as he ordered the planes back after they missed the first time. He was a skinny, harmless kid from Pennsylvania who only wanted to be liked. It is later revealed that his death was actually Aarfy's fault because he didn't accurately navigate them.
• Luciana – A woman whom Yossarian briefly dates in Rome and whom he spends a great deal of the second half of the book looking for, without success. She refuses to marry Yossarian because she believes he's crazy for wanting to marry her at all.
• McWatt – The pilot of Yossarian's plane, one of his closest friends and Nately's roommate as well. A young man who appears to be very calm and serene and whom Yossarian considers to be crazy because he remains sane during the war. He enjoys flying his plane low to scare Yossarian, which eventually leads to Yossarian choking him and threatening to murder him during one of their combat training sessions. After this, McWatt is sympathetic towards Yossarian and seems to realize that Yossarian might actually be going insane. McWatt accidentally kills Kid Sampson when flying too low and slicing him in half with a plane propeller, driving him to commit suicide by stalling and crashing his plane into a mountain.
• Major Metcalf – One of the judges presiding over the Action Board during Clevinger's trial. He is extremely cowardly and strongly resembles Clevinger in many ways, inevitably leading to him being shipped away as well at the end of the trial.
• Michaela – The poor, plain, simple-minded, hard-working young maid who works in the apartments where Yossarian and his unit stay while in Rome. She is a sweet and innocent girl who doesn't speak English and whom the enlisted men mostly leave alone, except when they mock her in English so she can't understand them. She is raped and murdered by Aarfy, who simply dismisses the murder as inconsequential because he's "good old Aarfy, who never pays for it".
  Further information: Captain Aardvark
• Colonel Moodus – General Dreedle's son-in-law, whom the general hates and constantly tries to harass and have demoted. Moodus thinks Dreedle is a know-it-all that cannot take criticism.
• Lieutenant Mudd – More frequently referred to as "the dead man in Yossarian's tent," Mudd was killed in action before officially joining the squadron. Due to the bureaucratic uncertainty over the status of Mudd, no one will accept responsibility for Mudd and his belongings, and Sergeant Towser refuses to accept the man existed at all.
• Colonel Nevers – The colonel who held Cathcart's position before he was killed on Yossarian's 23rd mission.
• General P. P. Peckem – A pompous, pretentious and highly delusional general who desperately wants to take over General Dreedle's post as the superior commanding officer of Pianosa. Because of this ambition, he has a vicious rivalry with Dreedle and constantly tries to undermine him and have him demoted. His attempts are mostly thwarted without his knowledge by desk clerk ex-P.F.C. Wintergreen, who enjoys making Peckem look foolish.
• Piltchard and Wren – Two captains in charge of squadron operations that are always mentioned in tandem and are in charge of organizing combat crews for missions. They are sympathetic towards Yossarian, despite his desire to avoid missions. Both are described as mild, soft-spoken men who are average in pretty much every aspect and yet love flying and so they assign themselves to every single mission.
• Corporal Popinjay – The clerk present at Clevinger's trial; he is imprisoned for being too specific in his shorthand.
• Kid Sampson – An underaged soldier killed by the propeller of McWatt's airplane. The event drives McWatt to suicide which in turn causes Doc Daneeka's bureaucratic "death".
• Major Sanderson – A neurotic psychiatrist who is convinced that Yossarian is mentally unstable because he acts rationally.
• Mrs. Scheisskopf – Scheisskopf is always too busy planning parades to fulfill his wife's masochistic sexual fantasies. Instead, she sleeps with Scheisskopf's cadets, so they can all get revenge on her husband and she can get back at him for the lack of attention. She purports to be atheist but is actually a devout believer.
  Further information: Scheisskopf
• Sammy Singer – The tailgunner on Yossarian's bomber when Snowden dies. While he is just a minor character in Catch-22, he becomes one of the main characters in the sequel, Closing Time.
• Corporal Snark – The mess sergeant before Milo Minderbinder. He was demoted for purposely poisoning sweet potatoes with soap chips, giving the squadron diarrhea, which he did at Yossarian's request. Snark is now referred to as Milo's "first chef".
• Dr. Stubbs – The doctor in Dunbar's squadron who grounds any pilot who requests it. He falls into an existential crisis after Colonel Korn shuts down his medical tents.
  Further information: Doc Daneeka
• Sergeant Towser – Major Major's assistant; he prevents anyone from seeing the Major while he is in his office, and only allows them in when the Major is gone. Due to Major Major's unwillingness to see anyone, Towser is the de facto head of the 256th squadron. Towser also holds no desire for a promotion or any interest in the war.
• Corporal Whitcomb – An atheist who constantly antagonizes and looks to usurp Chaplain Tappman, his direct superior. He is openly rude and contemptuous, absolutely detests his seclusion in the woods, and is very easily offended.
• Chief White Halfoat – An American Indian whose family was forced to move from wherever they settled because oil was always discovered. He is transferred to Pianosa after Wintergreen strikes an oil pipe and nearly drowns. In the army, he works as Captain Black's assistant. He jokingly threatens to slit Captain Flume's throat while he sleeps, which accidentally drives Flume to paranoid madness. After this, he becomes Doc Daneeka's tent mate and terrorizes him as well. During the Siege of Bologna, he decides that he will eventually die of pneumonia, which he ultimately does.
• Ex-P.F.C. Wintergreen – An ex-P.F.C. because of his constant urge to go AWOL, Wintergreen has been demoted so many times that he entertains hopes of becoming an ex-general. Due to his position in charge of mail distribution, he wields a great amount of power in the novel. By forging documents and destroying mail, he becomes more powerful than the generals. His main concern throughout the novel is humiliating General Peckem because he was the first person to have demoted him. He also frequently butts heads with Milo as they are both in the black market business.

Unnamed characters

• The C.I.D. Investigators
  Further information: C.I.D. Investigators
  The first CID man is sent to investigate the excessive censoring being done by a soldier signing his name as "Washington Irving", an alias Yossarian used on a whim. He enters the hospital, posing as a patient, then comes down with pneumonia and becomes a real patient. The second CID man is sent to investigate the continued use of "Washington Irving"'s name, which is now at the hands of Major Major. He goes undercover as a pilot but blows his cover by telling everyone who he is. The two investigators end up pursuing each other instead of making any actual headway in their cases.
• Dreedle's girl – Allegedly a nurse, she follows General Dreedle wherever he goes. She is a very attractive woman and Dreedle keeps her around to torment his son-in-law, Colonel Moodus, hoping to catch him in an adulterous situation for which he can punish him.
• The maid with the lime-colored panties A woman with whom Yossarian paradoxically falls in love, because she is the only woman that Yossarian can't possibly fall in love with. Her charm lies in how willing she is to have relations with anyone who asks her.
• Nately's Whore
  Further information: Nately § Nately's Whore
  A prostitute in Rome with whom Nately is deeply in love. She despises Yossarian and is wildly apathetic towards Nately until he allows her to get some sleep. She has a young sister whom Nately is determined to send to college. After Nately dies, Nately's whore blames Yossarian for his fate and spends the rest of the novel attempting to murder him.
• Nately's Whore's Kid Sister
  Further information: Nately § The Kid Sister
  The young sister of the prostitute Nately fancies in Rome. After her older sister develops a mania against Yossarian, she and the prostitutes are turned out onto the streets.
• The new recruits
  Further information: Yossarian § Yossarian's tentmates
  A group of new young officer-pilots whom Yossarian hates. They are friends from back home and are excited to take part in the war. They take over most of Yossarian's tent and throw out all of Mudd's belongings.
• The old man in Rome – A 107-year-old man who lives in the brothel frequented by Nately. He sides with whoever is in power and mocks Nately's idealism. He reminds Nately uncomfortably of his own father for the reason that the old man is absolutely nothing like his father.
• The Soldier in White – An unnamed soldier wrapped completely in bandages. He is connected to two bottles of unidentified liquid, one of which feeds into him through an IV, while the other drains from his catheter. When the bottles are respectively empty and full, their roles are exchanged. Dunbar claims there is actually no one under the bandages. The other patients avoid him because they dislike the fact that he is worse off than they are. The Texan is the only patient who talks to him and tries to convince the others to do so. He eventually dies without anyone realizing. Later, a burn victim named Lieutenant Schmulker is admitted to the hospital with similar bandages; the other patients experience mass hysteria, convinced that the original Soldier in White has mysteriously returned.
• The Texan – A patriotic soldier who keeps the men from staying in the medical ward to hide out from the war by being overly friendly. He is in the ward when Dunbar and Yossarian enter, attempting to escape their duties in their respective squadrons, but they are eventually chased out by his pleasant demeanor.

References

• Heller, Joseph (1961). Catch-22, a novel. New York: Simon and Schuster. OCLC 271160.