The Williams FW12 was a Formula One racing car used by the Williams team for the 1988 season. An updated version, the FW12C, was used for 12 of the 16 races of the 1989 season. The FW12 was Williams's first naturally aspirated car since the FW08 and FW08C used in the 1982 and 1983 season.

The 1988 FIA Formula One World Championship was the 42nd season of FIA Formula One motor racing. It featured the 1988 Formula One World Championship for Drivers and the 1988 Formula One World Championship for Constructors, which were contested concurrently over a sixteen-race series that commenced on 3 April and ended on 13 November. The World Championship for Drivers was won by Ayrton Senna, and the World Championship for Constructors by McLaren-Honda. Senna and McLaren teammate Alain Prost won fifteen of the sixteen races between them; the only race neither driver won was the Italian Grand Prix, where Ferrari's Gerhard Berger took an emotional victory four weeks after the death of team founder Enzo Ferrari. McLaren's win tally has only been bettered or equalled in seasons with more than sixteen races; their Constructors' Championship tally of 199 points, more than three times that of any other constructor, was also a record until 2002.