Grant Thomas Green (born September 27, 1987) is an American former professional baseball second baseman.

[1] Green earned first team honors from the California Interscholastic Federation and the Orange County Register.

After his senior season, he was the 14th-round draft choice of the San Diego Padres, but he opted to attend the University of Southern California (USC) instead.

[3] He batted .412 with six RBI and two stolen bases[1] at the 2005 COPABE "AAA" Pan Am Junior Championships in Villahermosa, Mexico.

[6] However, he turned in an impressive performance by season's end, batting .374 (79-for-211) overall, with four home runs, 32 RBI, and 16 stolen bases in 24 attempts.

[7] He returned to the CCBL in 2008 to play for the Chatham Anglers, and was honored by the league as its top pro prospect.

Although some scouts had projected him as a future third baseman, both Green and the Athletics stated a desire for him to remain at shortstop.

Starting the 2010 season, he was rated as Oakland's third best prospect according to Baseball America[10] and was a non-roster invitee to the A's spring training camp as part of his contract.

For the 2011 season, Green was moved to the outfield and played for the Double–A Midland RockHounds with a minor stint in the Triple–A playoffs.

[23] On April 12, 2017, after injuries to Trea Turner and Stephen Drew, the Nationals called up Green to the majors.

On June 21, 2017, Green signed a minor league contract with the Chicago White Sox.