Mirko Nišović (; born July 2, 1961) is a Serbian retired sprint canoeist who competed from the late 1970s to the late 1980s. Competing in three Summer Olympics, he won two medals at Los Angeles in 1984 with a gold in the C-2 500 m and a silver in the C-2 1000 m events, in team with Matija Ljubek.
Nišović also won six medals at the ICF Canoe Sprint World Championships with three golds (C-2 500 m: 1982, 1983; C-2 10000 m: 1985), two silvers (C-2 1000 m: 1982, 1985), and one bronze (C-2 1000 m: 1983).