The 1980 Monte Carlo Open was a men's tennis tournament played on outdoor clay courts at the Monte Carlo Country Club in Monte Carlo, Monaco that was part of the 1980 Volvo Grand Prix circuit. It was the 74th edition of the tournament and was held from March 31 through April 6, 1980. Björn Borg won the singles title.
Björn Borg defeated Guillermo Vilas 6–1, 6–0, 6–2
Paolo Bertolucci / Adriano Panatta defeated Vitas Gerulaitis / John McEnroe 6–2, 5–7, 6–4