Carlos Francisco Diaz (born December 24, 1964) is a former Major League Baseball catcher. Diaz played for the Toronto Blue Jays in 1990. He batted and threw right-handed.
Diaz attended Oklahoma State University, and in 1984 he played collegiate summer baseball with the Falmouth Commodores of the Cape Cod Baseball League.
He was selected by the Blue Jays in the 14th round of the 1986 MLB Draft. He resides in Safety Harbor, Florida and, as of August 2018, is Vice Mayor on the city council.