The 1989 Monaco Grand Prix was a Formula One motor race held at the Circuit de Monaco, Monte Carlo on 7 May 1989. It was the third race of the 1989 Formula One World Championship. The 77-lap race was won from pole position by Ayrton Senna, driving a McLaren-Honda, with teammate Alain Prost second and Stefano Modena third in a Brabham-Judd.

Ayrton Senna da Silva was a Brazilian racing driver who won the Formula One World Drivers' Championship in 1988, 1990, and 1991. One of three Formula One drivers from Brazil to become World Champion, Senna won 41 Grands Prix and set 65 pole positions, with the latter being the record until 2006. He died as a result of an accident while leading the 1994 San Marino Grand Prix, driving for the Williams team.