Marco Galiazzo (born 7 May 1983) is an athlete from Italy. He competes in archery.

Galiazzo competed at the 2004 Summer Olympics in men's individual archery. He won his first three elimination matches, advancing to the quarterfinals. In the quarterfinals, Galiazzo faced Vic Wunderle of the United States, defeating Wunderle 109-108 in the 12-arrow match and advancing to the semifinals. There, he faced Laurence Godfrey of Great Britain, defeating Godfrey 110-108. Galiazzo then competed against Hiroshi Yamamoto of Japan in the gold medal match, winning 111-109 to earn the gold medal.

Galiazzo was also a member of the 7th-place Italian men's archery team at the 2004 Summer Olympics.