Patrick McKenna is a Canadian comedian and actor. He is best known for playing Harold Green on the television series The Red Green Show and Marty Stevens on the television series Traders.

The Red Green Show is a half-hour Canadian television comedy program that aired on various channels in Canada and the U.S. from April 4, 1991 until April 7, 2006. During its fifteen seasons, it had six network homes, but its longest run was with its final network, CBC Television. It found its largest fandom on U.S. broadcast stations, airing on more than 100 PBS affiliates at its peak. Essentially a cross between a sitcom and a sketch comedy series, it is also a parody of home improvement, do-it-yourself, fishing, and other outdoors shows, particularly The Red Fisher Show.