Mark David Darwin Arden (born 31 July 1956) is a British comedian and actor, best known for his television appearances. During the 1980s, he was one half of comic double act 'The Oblivion Boys', alongside Stephen Frost.

Arden was born in Newbury, Berkshire. He and Frost came to prominence in the late 1970s alternative comedy boom, and became recognisable to a national audience with regular spots on Saturday Live. In the early 1980s, they were instrumental in the forming of the long-running north London comedy show News Revue, and shortly afterwards began appearing as a pair in episodes of series such as The Black Adder and The Young Ones; they are perhaps most remembered for a series of commercials for Carling Black Label lager, one of which involved Arden and Frost appearing in the nude.