Chester David "Pinch" Thomas (January 24, 1888 – December 24, 1953) was an American professional baseball catcher who played in Major League Baseball from 1912 through 1921 for the Boston Red Sox (1912–17) and Cleveland Indians (1918–21).

[1] He spent the 1912 season as a little-used backup catcher for 1912 World Series championship Red Sox.

[1] A fine defensive replacement, Thomas was the primary catcher for the Red Sox during three years, helping them to the World Championship in 1915 and 1916.

Ernie Shore and Sam Agnew replaced Ruth and Thomas respectively and promptly caught the walked batter at second and recorded 26 consecutive outs.

In 1917 he led American League catchers with a .986 fielding percentage, but at the end of the season he was dealt to the Philadelphia Athletics, with two other players, in the same transaction that brought Joe Bush, Wally Schang and Amos Strunk to Boston.