Mark Edmondson (sometimes mistakenly spelled Edmundson) (born 24 June 1954 in Gosford, New South Wales) is a former professional Australian male tennis player.
Edmondson is best remembered for his victory at the Australian Open in 1976, in which he was unseeded in the tournament and beat three-time Wimbledon champion John Newcombe.
Eddo has won six career singles titles and 34 in doubles, including five major titles.