J. H. Williams III is a comic book artist and penciller. He is best known for his work on titles such as Chase, Promethea and Desolation Jones.

Williams' early work includes penciling the four-issue miniseries, Deathwish (1994-1995) from Milestone Media. Deathwish was written by Adam Blaustein and inked by Jimmy Palmiotti. He first came to prominence as the artist on the short-lived (ten issues, 1997-1998) Chase title from DC Comics, where he worked with writer D. Curtis Johnson.

Williams and Gray collaborated on two DC Elseworlds graphic novels, Justice Riders, written by Chuck Dixon, and Son of Superman, written by Howard Chaykin and David Tischman. Williams' next major work was for Wildstorm Comics' America's Best Comics with writer Alan Moore on Promethea (32 issues, 1999-2005).

In mid-2005 Williams launched a new series, this time with writer Warren Ellis, Desolation Jones, as well as illustrating the two "bookend" issues of Grant Morrison's Seven Soldiers project. In 2007 he worked with Morrison on another project, a three part Batman story in Batman 667-669. Williams also drew Jonah Hex #35 and has stated an interest in doing more, saying "I certainly want to do more issues myself or even a graphic novel if the opportunity and schedule presented itself." Williams became the regular artist on Detective Comics with writer Greg Rucka in June 2009, with the title focusing on Rucka's Batwoman character in part due to the absence of Batman in the aftermath of "Batman R.I.P." and Final Crisis. His run as artist has ended. Williams has been announced as not only the artist on a new Batwoman series but the co-author with W. Haden Blackman, and Amy Reeder Hadley will cover the second storyline.