1980 Monte Carlo Open

{{TennisEventInfo|1980|Monte Carlo Open|

| date=31 March – 6 April

| edition=74th

| category=Grand Prix circuit

| prize_money=$175,000

| draw=32S / 16D

| surface=Clay / outdoor

| location=Roquebrune-Cap-Martin, France

| venue=Monte Carlo Country Club

| champs={{flagicon|SWE}} Björn Borg{{cite web|title=1980 Monte Carlo – Singles draw|url=https://www.atptour.com/en/scores/archive/monte-carlo/410/1980/draws?matchtype=singles|publisher=Association of Tennis Professionals (ATP)}}

| champd={{flagicon|ITA}} Paolo Bertolucci / {{flagicon|ITA}} Adriano Panatta{{cite web|title=1980 Monte Carlo – Doubles draw|url=https://www.atptour.com/en/scores/archive/monte-carlo/410/1980/draws?matchtype=doubles|publisher=Association of Tennis Professionals (ATP)}}

}}

The 1980 Monte Carlo Open was a men's tennis tournament played on outdoor clay courts at the Monte Carlo Country Club in Roquebrune-Cap-Martin, France that was part of the 1980 Volvo Grand Prix circuit. It was the 74th edition of the tournament and was held from 31 March through 6 April 1980. First-seeded Björn Borg won the singles title, his third after 1977 and 1979.