John Mariotti (born August 19, 1984) is an American former professional baseball pitcher.
He was drafted by the Anaheim Angels in the 44th round of the 2003 MLB draft out of Chaminade College School and in the 36th round of the 2004 MLB draft out of Gulf Coast Community College, but did not sign either time.
Mariotti played for the Orioles farm system through 2010 before he was released.
He then signed with the Québec Capitales of the Canadian-American Association.
This biographical article relating to an American baseball pitcher born in the 1980s is a stub.