Dave Sheridan is an American actor, producer and writer. He is best known for playing Special Officer Doofy in the comedy "Scary Movie" (a spoof of deputy sheriff Dewey Riley from "Scream").

Dave began his career as an intern at "Saturday Night Live" during the 1991-1992 season. From there, he entered Chicago's famed comedy troupe, "The Second City", where he wrote, directed, and produced "Dave Sheridan's America", a multimedia stage show. He created "Buzzkill", a 1995 MTV reality series that featured three slacker buddies staging elaborate pranks and catching it all on video. Sheridan appeared in the 2002 music videos for "By the Way" (playing a crazy taxi driver) and "Universally Speaking" by Red Hot Chili Peppers. He also toured with his band that formed in 2004, Van Stone. Dave hosted a series called "Smile...You're Under Arrest!" on the Fox Reality Channel in 2008-09. In 2014, he portrayed Sheriff Lincoln in the parody film The Walking Deceased, inspired by The Walking Dead.

Sheridan is well known for his role in "Scary Movie" (2000) as Officer Doofy. To this day, Dave continues to wear the Officer Doofy attire and poses with fans for photos at pop culture conventions. Since then, Dave has starred in a number of films produced by the Wayans Brothers, Including "Little Man", "50 Shades of Black", and both "A Haunted House" films. He also portrayed the character Doug in the 2001 film "Ghost World". Dave has also starred in many well-known comedies, including "Bubble Boy" and "Sex Drive." He is also well known for his work in the horror genre, with films such as Rob Zombie's "The Devil's Rejects", Adam Green's fourth installment of the "Hatchet" franchise, "Victor Crowley", and the 2024 Fuzz on the Lens Productions film "Stream."