Michael Eugene "Mike" Fontenot (born June 9, 1980 in Slidell, Louisiana) is a Major League Baseball infielder for the San Francisco Giants.
Mike Fontenot was a standout for Salmen High School in Slidell, Louisiana. After his senior year, he was drafted in the 21st round (625th overall) of the 1999 MLB Amateur Entry Draft by the Tampa Bay Devil Rays, but chose to attend Louisiana State University on a baseball scholarship instead of going professional.
At Louisiana State Fontenot received National Freshman of the Year recognition as LSU's starting second baseman, batting .353 (103-for-292) with 13 doubles, three triples, 17 home runs, 64 RBI, 93 runs, and eight steals. He became the third LSU player to win National Freshman of the Year award, following second baseman Todd Walker (1992) and pitcher Brett Laxton (1993). Fontenot's 17 home runs set an LSU freshman record, surpassing the previous mark of 15 established by Blair Barbier in 1997.