Shawn Mark Tolleson (born January 19, 1988) is an American former professional baseball relief pitcher.

He played in Major League Baseball (MLB) for the Los Angeles Dodgers and Texas Rangers.

In 2011, he appeared in 14 games with the Great Lakes Loons, five with the Rancho Cucamonga Quakes and 38 with the AA Chattanooga Lookouts.

Tolleson was the primary closer at each level, working in 57 total games with a 7–2 record, 1.17 ERA and 25 saves.

Tolleson was placed on the disabled list after the game and underwent surgery on April 25 to repair a herniated disc in his back.

Tolleson recorded his first career save on May 20, 2015, against Boston in a 2-1 victory after Neftali Feliz was waived after not performing well enough in the closer role.

[13] After experiencing a setback in his rehab from Tommy John surgery, Tolleson announced his retirement on January 16, 2019.