Mary Cynthia Walsh is a Canadian actress, comedian, and writer. She is known for her work on CODCO and This Hour Has 22 Minutes.

This Hour Has 22 Minutes is a weekly Canadian television comedy that airs on CBC Television. Launched in 1993 during Canada's 35th general election, the show focuses on Canadian politics with a combination of news parody, sketch comedy, and satirical editorials. Originally featuring Cathy Jones, Rick Mercer, Greg Thomey, and Mary Walsh, the series featured satirical sketches of the weekly news and Canadian political events. The show's format is a mock news program, intercut with comic sketches, parody commercials, and humorous interviews of public figures.