John Coulthart (born 15 March 1962) is a British graphic artist, illustrator, author and designer who has produced book covers and illustrations, CD covers and posters.
He is also the author of the critically acclaimed Lovecraft-inspired book The Haunter of the Dark: And Other Grotesque Visions which contains a collaboration with Alan Moore entitled The Great Old Ones that is unique to this book and also has an introduction by Alan Moore.He has been updating a daily blog entitled cataloguing interests, obsessions and passing enthusiasms since February 2006 and also uses Twitter. He was nominated for a British Fantasy Award, for Best Artist, in 2005.
In 2012 he won the Artist of the Year award at the World Fantasy Awards.