The 2008 World Rally Championship was the 36th season of the FIA World Rally Championship. The season consisted of 15 rallies and began on 24 January, with the 2008 Monte Carlo Rally. Frenchman Sébastien Loeb successfully retained the Drivers' World Championship, his and co-driver Daniel Elena's record-breaking fifth consecutive title, all of them attained driving Citroëns. In addition, Citroën secured their fourth Manufacturers' title, and their first since 2005, from 2006 and 2007 victors, Ford.

The World Rally Championship is an international rallying series owned and governed by the FIA. Inaugurated in 1973, it is the second oldest of the FIA's world championships after Formula One. Each season lasts one calendar year, and separate championship titles are awarded to drivers, co-drivers and manufacturers. There are also two support championships, WRC2 and WRC3, which are contested on the same events and stages as the WRC, but with progressively lower maximum performance and running costs of the cars permitted. Junior WRC is also contested on five events of the World Rally Championship calendar.