Ryan Sook is an American comic book artist from San Jose, California. He has worked on Arkham Asylum: Living Hell, The Spectre, Hawkman, Seven Soldiers: Zatanna, Buffy the Vampire Slayer and Angel. He also illustrated X-Factor, written by Peter David at Marvel Comics. His style bears a strong resemblance to Mike Mignola and Adam Hughes.
- Lobster Johnson: The Killer in My Skull (inks)
- B.P.R.D.: Hollow Earth (pencils, inks with Curtis Arnold)