The 2019 Giro d'Italia was a three-week Grand Tour cycling stage race organised by RCS Sport that took place mainly in Italy, between 11 May and 2 June 2019. The race was the 102nd edition of the Giro d'Italia and was the first Grand Tour of the 2019 cycling season. The race started with an individual time trial in Bologna, and finished with another time-trial in Verona. The race was won by Richard Carapaz, who became the first Ecuadorian rider to win the Giro d'Italia. Italian Vincenzo Nibali finished 2nd, with Slovenian rider Primož Roglič in 3rd place. Carapaz also became the second South American rider to win the Giro, after Nairo Quintana in 2014.

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'.