Mason Jordan Williams (born August 21, 1991) is an American former professional baseball outfielder.

After Mason completed the seventh grade at St. Teresa School, his family moved to Winter Garden, Florida, where he could compete against a higher level of competition with the hopes of receiving a college baseball scholarship.

The New York Yankees selected Williams in the fourth round of the 2010 Major League Baseball draft.

[8][9] Williams began the year with the Charleston RiverDogs of the Single–A South Atlantic League, where he hit .304/.359/.489 with eight home runs and 19 stolen bases in 69 games before earning a promotion to the Tampa Yankees of the High–A Florida State League.

With Tampa, he hit .277/.302/.422 with three home runs in 22 games before dislocating his left shoulder on July 25.

[23] The following day, Williams made his first start for the Reds, and in the 4th inning, he hit a 3-run home run to give Cincinnati a 5–2 lead.

After Norfolk's season ended, the Orioles promoted Williams to the major leagues on September 3.

[31] On April 15, 2021, Williams signed a minor league contract with the New York Mets organization.

[33] In 17 games for the Mets, he hit .212/.297/.333 with 1 home run and 1 RBI before he was designated for assignment on June 20.

[34] He was outrighted to the Triple-A Syracuse Mets on June 24,[32] and elected free agency the same day.

His grandfather's brother, Walt Williams, played Major League Baseball from 1964 through 1975 as an outfielder with the Houston Colt .45s, Chicago White Sox, Cleveland Indians, and New York Yankees.