Katherine Elaine Hendrix is an American actress. She is known for her roles in Superstar, Romy and Michele's High School Reunion, the 1995 Get Smart series, the 1998 remake of The Parent Trap, Dynasty, Inspector Gadget 2, and the 2004 documentary film What the Bleep Do We Know!?

Superstar is a 1999 American comedy film and a Saturday Night Live spin-off about a quirky, socially inept girl named Mary Katherine Gallagher. The character was created by SNL star Molly Shannon and appeared as a recurring character on SNL in numerous skits. The story follows Mary Katherine trying to find her place in her Roman Catholic private school. The movie is directed by former Kids in the Hall member Bruce McCulloch. It stars Molly Shannon, Will Ferrell, Elaine Hendrix, Harland Williams, Mark McKinney, who appeared in many of the Mary Katherine Gallagher SNL skits on TV, and Glynis Johns in her final film. Molly Shannon received a nomination for Blockbuster Entertainment Award "Favorite Actress - Comedy" but lost out to Heather Graham in Austin Powers: The Spy Who Shagged Me.