Ilias Greek: Ηλίας is the Greek version of the name of the Prophet Elijah. It is also commonly spelled Elias.

Notable people with the name include:

• Akhtaruzzaman Ilias (1943–1997), Bangladeshi novelist and short story writer
• Ilias Ali (born 1959), Indian politician
• Ilias Ali (born 1961), Bangladeshi politician
• Ilias Akhomach (born 2004), Spanish footballer
• Ilias Anastasakos (born 1978), Greek footballer
• Ilias Atmatsidis (born 1969), a former Greek football goalkeeper
• Iliaș Colceag (fl. before 1710–1743), Moldavian mercenary and military commander in the Ottoman and Russian Empire
• Ilias Gorchkhanov (1967–2005), the first leader of the Ingush Jamaat
• Ilias Haddad (born 1989 in Nador), Moroccan footballer
• Ilias Hatzipavlis (Ηλίας Χατζηπαυλής) (born 24 May 1949), a Greek sailor
• Ilias Iliadis (Ηλίας Ηλιάδης. born Jarji Zviadauri. ჯარჯი ზვიადაური. on 10 November 1986), a Georgian-born judoka competing for Greece
• Ilias Iliadis (born 2001), Canadian-Greek footballer
• Ilias Iliou (1904–1985), member of the Greek Parliament and leader of the United Democratic Left
• Ilias Ioannou (born 1979), football (soccer) player who plays for Kerkyra F.C. in Greek First Division
• Ilias Kafetzis, Greek athlete who competed at the 1896 Summer Olympics in Athens
• Ilias Kotsios (Greek: Ηλίας Κώτσιος) (born 25 April 1977 in Larissa, Greece), a football defender
• Ilias Kyriakidis (born 1985 in Athens), Greek football player currently playing for Ergotelis
• Ilias Kyriazakis (born 1960 in Veroia, Greece), veterinarian, UK-based academic, holder of numerous scientific awards and honours
• Ilias Kyriazis (Greek: Ηλίας Κυριαζής, born 1978), born in 1978 in Athens, Greece, a comic book writer and artist
• Ilias Lalaounis (1920–2013), Greek jewelry designer
• Ilias Louka (born 1974), retired Cypriot shot putter
• Ilias Manikas (born 1980 in Greece), football striker, currently playing for Rodos F.C.
• Ilias Melkas (Greek: Ηλίας Μέλκας, born 1989), an Albanian footballer for Iraklis Thessaloniki F.C.
• Ilias Mihalopoulos (born 1985), Greek footballer for Asteras Tripolis FC
• Bille Ilias Mohamed (born 30 November 1987), one of two Swedish citizens of Somali descent who were convicted of conspiracy to commit terrorist crime in Gothenburg, Sweden, in 2010
• Elias Pavlidis (born 1978), Greek amateur boxer who competed at the Athens Olympics 2004
• Ilias Polatidis (1966–2016). (Ηλίας Πολατίδης. born 1966), a member of the Popular Orthodox Rally
• Ilias Poursanidis (born 1972 in Athens), former Greek footballer
• Ilias Rosidis (1927–2019). (Ηλίας Ρωσίδης, Greece), footballer for Olympiacos FC and the Greece national team
• Ilias Solakis (born 1974), Greek footballer for Olympiakos Volou in Greek Superleague
• Ilias Stogiannis (born 1976 in Kozani, Greece), professional football goalkeeper for Rodos F.C.
• Ilias Tsirimokos (1907–1968). (Ηλίας Τσιριμώκος. 1907–14 July 1968), a Greek politician
• Ilias Venezis (1904–1973), a major Greek novelist
• Ilias Vrioni (1882–1932), served as Prime Minister of Albania three times
• Ilias Yfantis (born 1936), Greek footballer for Olympiacos F.C. during the 1950s and 60s
• Ilias Zeytulaev (born 1984), Uzbek footballer for Lanciano in the Lega Pro Prima Divisione
• Ilias Zouros (alternate spelling: Elias Zouros, born March 11, 1966), Greek basketball coach

fictional characters:

• Leo Ilias, a character in the manga Saint Seiya: The Lost Canvas by Shiori Teshirogi