Phyllis Barnhart (December 16, 1922 – February 6, 2008) was an American animator and cel painter. She was best known for her work on the 1982 animated film, The Secret of NIMH (which was her only credit in an animated film, coincidentally enough).^[1]

Naomi Phyllis Fowler was born on December 16, 1922, in Levan, Utah.^[1] She began her career in animation at the Disney studio during the 1940s, starting on the films Fun & Fancy Free and Melody Time, at the inking and painting department.^[1] She later worked as a freelance assistant animator and cel painter for such classic animation studios as Filmation, Hanna-Barbera, Bandolier Films, Chuck Jones Productions, Murakami-Wolf-Swenson, DePatie-Freleng and of course, Disney. She worked as one of the lead cel painters for The Secret of NIMH (1982), which was created at Don Bluth Productions.^[1]

Barnhart's husband Dale Barnhart, died in 1996.^[1] He worked as a Disney layout and background artist on films such as The Jungle Book and The Sword in the Stone.^[1]

Phyllis Barnhart died at age 85, on February 6, 2008,^[2] in Salt Lake City, Utah.