Joshua LaRoy Barfield (born December 17, 1982) is a former American professional baseball second baseman. He is the son of former major league outfielder Jesse Barfield. Barfield was born in Venezuela during his mother's two-week winterball visit with his father. He attended Klein High School in Harris County, Texas and holds the District 5 single season home run record.

His younger brother Jeremy Barfield was drafted by the Oakland Athletics in the 8th round of 2008 Major League Baseball draft.

Barfield was drafted in the fourth round of the 2001 Major League Baseball draft by the San Diego Padres. In 2004 and 2005,Baseball America listed him as the Padres' number one prospect. In 2006, he fell to third in the organization behind pitcher Cesar Carrillo and catcher George Kottaras.

Barfield made his major league debut April 3, 2006, and collected his first career hit. His first major league home run came April 17, 2006, at Coors Field against the Colorado Rockies, a 431-foot solo shot to left-center field, off Jeff Francis.

On September 4, 2006, against the Rockies in Petco Park, Barfield hit a walk-off home run, a three-run home run off Brian Fuentes that gave the Padres a 7–5 victory. He claimed that he had not hit a walk-off home run at any level of baseball prior to that.

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