Joshua Isaiah Harrison (born July 8, 1987) is an American professional baseball infielder who is a free agent.

He has previously played in Major League Baseball (MLB) for the Pittsburgh Pirates, Detroit Tigers, Washington Nationals, Oakland Athletics, Chicago White Sox, and the Philadelphia Phillies.

[8] On July 30, 2009, the Cubs traded Harrison, along with Kevin Hart, and José Ascanio to the Pittsburgh Pirates for pitchers John Grabow and Tom Gorzelanny.

[14] On July 6, 2014, Harrison was selected to his first career All-Star Game, along with teammates Andrew McCutchen and Tony Watson.

Morneau won the title with a .319 average after sitting out the team's final two games, one of which lasted twelve innings.

[16] Following the 2015 season, the Pirates' regular starting Second baseman, Neil Walker, was traded to the New York Mets.

[17] On August 23, 2017, against the Los Angeles Dodgers, Harrison became the first player in MLB history to break up a no-hitter in extra innings with a walk-off home run.

The home run was hit in the tenth inning, off of pitcher Rich Hill, to give the Pirates a 1–0 win.

The next day, on April 16, he was ruled out for 6 weeks due to a fracture of the fifth metacarpal, a similar injury he suffered last September.

[28] On July 27, 2020, Harrison signed a one-year major league contract with the Washington Nationals.

[31] On July 30, 2021, Harrison was traded to the Oakland Athletics along with Yan Gomes in exchange for Drew Millas, Richard Guasch, and Seth Shuman.

On March 15, 2022, Harrison signed a one-year, $5.5 million contract with a 2023 club option with the Chicago White Sox.

[37] On August 15, 2023, Harrison signed a minor league contract with the Texas Rangers organization.

[citation needed] Harrison is the nephew of former major league outfielder and coach John Shelby.