Joseph Nicholas Gallo (born November 19, 1993) is an American professional baseball third baseman and left fielder for the Texas Rangers of Major League Baseball (MLB).

Gallo attended Bishop Gorman High School in Las Vegas, Nevada. As a senior, he was the Nevada Gatorade Baseball Player of the Year and a High School All-American by MaxPreps, ESPNHS and USA Today. He hit a Nevada high school record 67 career home runs, and during his senior year of high school, he had a .509 batting average with 21 home runs and 80 RBIs.

Gallo committed to play collegiate baseball at Louisiana State University.

Gallo was drafted by the Texas Rangers in the first round with the 39th overall selection in the 2012 Major League Baseball Draft.

Gallo started his professional career with the Arizona League Rangers, where he hit .293/.435/.733 with 18 home runs and 52 runs batted in in 43 games. The 18 home runs were an Arizona League record. He was named the Arizona League MVP. He was promoted to the Spokane Indians of the Class A Short-Season Northwest League, hitting .214/.343/.464 with four home runs in 16 games.