Look up grimalkin in Wiktionary, the free dictionary.

A grimalkin (or greymalkin) is an old or evil-looking female cat.

Grimalkin may also refer to:

• The Grimalkin, the 2006 album by Noekk
• SV Grimalkin, a yacht that competed but failed to finish in the 1979 Fastnet race
• Grimalkin, a character in The Wardstone Chronicles
• "Grimalkin", a poem by Thomas Lynch
• Grimalkin, the 1811 winner of the Doncaster Cup horse race
• Grimalkin, a comic strip by Louis Wain
• Grimalkin, a cat in the book "King of the Wind" by Marguerite Henry (1948)
• The Grimalkin is a malk in The Dresden Files; a species of feline fae allied with the Winter court, about the size of a bobcat, but stronger, faster and smarter than most humans.

Graymalkin may refer to:

• the familiar, presumably a cat, of one of the three witches in Shakespeare's Macbeth
• Graymalkin, a fictional character in the X-Men series of comics
• Graymalkin Industries, a front for X-Men activities in comics
• Graymalkin, a space station dismantled and used as material for the island of Providence in Marvel comics
• Graymalkin, a demonic cat in the 1957 British film Curse of the Demon