Otis Benjamin Thornton (born June 30, 1945) is a retired catcher in Major League Baseball.

Thornton was selected in the 68th round (817th overall) by the Houston Astros in the 1965 June amateur baseball draft out of Westfield High School in Docena, Alabama.

In the first game he was put in defensively as catcher in the bottom of the eighth inning for Skip Jutze.

He came to bat for his last time in the 9th inning against Mike Marshall with the bases loaded and hit a ground-out to 2nd baseman Pepe Frias who through the ball to first for the out.

This biographical article relating to an American baseball catcher born in the 1940s is a stub.