Sean Thomas White (born April 25, 1981) is an American former Major League Baseball (MLB) right-handed relief pitcher who played for the Seattle Mariners between 2007 and 2010.

He was 9–3 through 18 appearances with Myrtle Beach, including 4–0 at home until he made his Double-A debut on July 18, throwing 6.0 shutout innings in a 1–0.

He was named Myrtle Beach's June Pitcher of the Month by the organization going 3–2 with a 3.63 ERA in 34.2 innings pitched.

On February 11, 2012, White signed a minor league contract with the Boston Red Sox but was released at the end of spring training.

On February 18, 2013, he signed a minor league contract with the Los Angeles Dodgers and was assigned to the AAA Albuquerque Isotopes.