Matteo Tosatto is an Italian former road racing cyclist. He rode as a professional between 1997 and 2016, with his biggest personal victories coming in stages of the Giro d'Italia and the Tour de France. He contested 34 Grand Tours during his career, making him the rider with most participations and finishing 28 of them.

In road bicycle racing, a Grand Tour is one of the three major European professional cycling stage races: Giro d'Italia, Tour de France, and Vuelta a España. Collectively they are termed the Grand Tours, and all three races are similar in format, being three-week races with daily stages. They have a special status in the UCI regulations: more points for the UCI World Tour are distributed in Grand Tours than in other races, and they are the only stage races allowed to last longer than 14 days, and these differ from major stage races more than one week in duration.