The 1999 FIA Formula One World Championship was the 53rd season of FIA Formula One motor racing. It featured the 1999 Formula One World Championship for Drivers and the 1999 Formula One World Championship for Constructors, which were contested concurrently over a sixteen-race series that commenced on 7 March and ended on 31 October.

Defending champion Mika Häkkinen was again awarded the World Drivers' Championship. His team McLaren just missed out: it was Ferrari that clinched the World Constructors' Championship by a margin of four points. It would be the last Drivers' title for a McLaren driver until Lewis Hamilton in 2008. It was Ferrari's first Constructors' title since 1983, but would also mark the first of six successive titles up to 2004. Away from the frontrunners, the season proved to be a disastrous one for the new British American Racing (BAR) team with their star driver and 1997 world champion Jacques Villeneuve, who despite high pre-season expectations failed to score a single point during the season, being the only one of the eleven teams entered not to score.

It was also the final season for 1996 world champion Damon Hill.

The following teams and drivers competed in the 1999 FIA Formula One World Championship. All teams competed with tyres supplied by Bridgestone.

^† All engines were 3.0 litre, V10 configuration.

After three decades in the sport, the Tyrrell team was sold to British American Tobacco and its entry was used by the new British American Racing (BAR) team, with Renault-based Supertec engines replacing the Ford-Cosworth units of the previous season.

In 1998, Goodyear supplied tires to five teams, but when the company withdrew from the sport after 34 years, it left Bridgestone as the sole tire supplier.

The Mecachrome engines used by Williams in 1998 were rebadged as Supertec units.