Roy D. Mercer is a fictional character created by disc jockeys Brent Douglas and Phil Stone on radio station KMOD in Tulsa, Oklahoma, United States. Douglas, who performs Mercer's voice, uses the character as a vehicle for comedy sketches in which he performs prank telephone calls.

Originally, the prank call sketches were a part of KMOD's morning show; by 1997, Capitol Records began issuing the sketches on compact disc. As of 2007, sixteen Roy D. Mercer compilations have been released on the Capitol and Virgin Records labels. Read more on Last.fm. User-contributed text is available under the Creative Commons By-SA License; additional terms may apply.