Thomas Mason-Griffin (born September 29, 1990) is an American former basketball player.
After a decorated high school career in which he was named a McDonald's All-American, Mason-Griffin signed with Oklahoma.
In his only season with the Sooners, he averaged 14.1 points and 5.0 assists per game, earning third-team All-Big 12 honors.
He declared for the 2010 NBA draft and apologized to Oklahoma fans "if they felt I let them down”.
On October 30, 2016, Mason-Griffin was selected by the Maine Red Claws with the 108th pick of the 2016 NBA Development League draft.