Thomas Wilkey Mendonca (born April 12, 1988) is an American former professional baseball third baseman.

Mendonca won the 2008 College World Series Most Outstanding Player award while a sophomore at Fresno State University.

He attended Fresno State University and played college baseball for the Bulldogs.

[5] Mendonca was selected by the Oakland Athletics in the Triple-A phase of the 2012 Rule 5 draft.

[5] He signed with the Philadelphia Phillies on a minor league deal on May 11, and played for the Reading Fightin Phils until he was released on June 6, 2013.