The 1977 Giro d'Italia was the 60th running of the Giro, one of cycling's Grand Tours. It started in Bacoli, on 20 May, with a 7 km (4.3 mi) prologue and concluded in Milan, on 13 June, with a 122 km (75.8 mi) mass-start stage. A total of 130 riders from thirteen teams entered the 22-stage race, that was won by Belgian Michel Pollentier of the Flandria team. The second and third places were taken by Italians Francesco Moser and Gianbattista Baronchelli, respectively. Freddy Maertens won 7 of the first 11 stages before abandoning due to a crash on Stage 8B.

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'.