The 1998 Monaco Grand Prix was a Formula One motor race held at Monaco on 24 May 1998. It was the sixth race of the 1998 Formula One World Championship.

The race was won by Finnish driver Mika Häkkinen, driving a McLaren-Mercedes, his fourth win of the season. Häkkinen recorded a grand chelem, having taken pole position, led every lap of the race and set the fastest lap. Italian Giancarlo Fisichella finished second in a Benetton-Playlife, with Northern Irishman Eddie Irvine third in a Ferrari. This would be the last grand chelem by a McLaren driver until 27 years later, when Oscar Piastri achieved the same feat at the 2025 Dutch Grand Prix.