The 2007 Giro d'Italia was the 90th running of the Giro d'Italia, one of cycling's Grand Tours. It took place from 12 May to 3 June 2007. The race began in Sardinia and finished in Milan, and featured five mountain top finishes, of which one was an individual time trial. The race also visited France and Austria in three stages.

The Giro d'Italia is an annual multiple-stage bicycle race primarily held in Italy, while also starting in, or passing through, other countries. The first race was organized in 1909 to increase sales of the newspaper La Gazzetta dello Sport, and the race is still run by a subsidiary of that paper's owner. The race has been held annually since its first edition in 1909, except during the two world wars. As the Giro gained prominence and popularity the race was lengthened, and the peloton expanded from primarily Italian participation to riders from all over the world. The Giro is a UCI World Tour event, which means that the teams that compete in the race are mostly UCI WorldTeams, with some additional teams invited as 'wild cards'.