Judith Hoag (born June 29, 1968) is an American actress who is best known for her role as April O'Neil in the first film of the Teenage Mutant Ninja Turtles franchise, released in 1990.

For Disney, she portrayed Gwen Piper in the Disney Channel television film series, Halloweentown and Denise Chappel in Armageddon. She also played Tandy Hampton in Nashville, Sarah's mom in I am Number Four, and Cynthia Hamilton in the ABC TV show Castle.