As coach José Antonio Valentín (born October 12, 1969) is a Puerto Rican former Major League Baseball infielder.

However, he was sent to the Milwaukee Brewers on March 26, 1992, with Ricky Bones and Matt Mieske in exchange for Gary Sheffield and Minor League prospect Geoff Kellogg.

On January 12, 2000, and after eight seasons with the Brewers, he was traded with Cal Eldred to the Chicago White Sox in exchange for Jaime Navarro and John Snyder.

Valentín capped off his great regular season by hitting two home runs against the Florida Marlins on September 18, 2006, in the division-clinching game.

On July 20, 2007, Valentín fouled a ball off his right leg, breaking his tibia and ending his season after 51 games and a .241 batting average.

With the Triple-A New Orleans Zephyrs, Valentin told the Mets his season was over on June 21, due to physical and mental wear and tear.

[1] Valentín had success as one of the few shortstops with good home run power, averaging 25 homers and 80 RBI over a 162-game season for his career.

In 2012, Valentín served as bench coach for the Leones de Ponce team of the Puerto Rico Baseball League.