Blake Shane Gailen (בלייק גיילין; born March 27, 1985) is an American-Israeli hitting coach for the Rancho Cucamonga Quakes and left-handed former professional baseball outfielder.

In high school, Gailen was first-team All-West Valley League in California in his junior and senior seasons.

He played baseball for Glendale Community College, where he was All-Western State Conference as a freshman and All-Southern California Team as a sophomore.

After finishing the season with the Tulsa Drillers, Gailen was brought back for spring training.

Gailen again signed a minor league contract with the Los Angeles Dodgers in January 2019.

In October 2020, Gailen signed a contract with the Melbourne Aces of the Australian Baseball League.

[5] He and major league infielder Josh Satin—also a member of the Israeli national baseball team—have been friends since they were children, and Gailen attended Satin's bar mitzvah.

"[7] He played baseball in high school for El Camino Real High School in Woodland Hills, California, where Gailen pitched (throwing a no-hitter as a senior, and going 19-4 his last two seasons) as well as played outfield and hit, graduating in 2003.

[10] He then played for the University of Nevada-Las Vegas Rebels baseball team, where Gailen was named the Mountain West Conference Player of the Week on February 12, 2007, and graduated with a degree in Communications in 2007.

[1] In 2014, playing again for the Lancaster Barnstormers, Gailen was named to the Atlantic League's All-Star team, and for the season batted .350/.460/.646 with 18 homers, 52 RBIs, and a 1.107 OPS.

"[14] He also played 51 games for Toros de Tijuana of the Mexican League, batting .271/.385/.537 with 11 home runs.

[26] In 126 games he batted .282/.378/.511 and led the Atlantic League in home runs (28; one short of the franchise record) and RBIs (91), while coming in second in walks (72).

On October 31, 2018, Gailen signed with the Tomateros de Culiacán of the Mexican Pacific League.

[29] On January 22, 2019, Gailen signed a minor league contract with the Los Angeles Dodgers.

[34] On October 3, 2020, Gailen signed a contract with the Melbourne Aces of the Australian Baseball League for the 2020-21 season.

[35] On March 24, 2021, Gailen signed with the Lancaster Barnstormers of the Atlantic League of Professional Baseball for the 2021 season.

On December 23, 2021, Gailen announced that he would be joining the Los Angeles Dodgers organization as a coach in the hitting department and retire as an active player.

[44] Gailen played left field for Team Israel at the 2017 World Baseball Classic main tournament, in March 2017.

"[46] In October 2018 he became a dual Israeli citizen, partly to help Israel’s baseball team make the 2020 Olympics.