Thomas William Corcoran (January 4, 1869 – June 25, 1960)[1] was an American professional baseball player.

He played in Major League Baseball as a shortstop from 1890 to 1907 for the Pittsburgh Burghers (1890), Philadelphia Athletics (1891), Brooklyn Grooms/Brooklyn Bridegrooms (1892–1896), Cincinnati Reds (1897–1906) and the New York Giants (1907).

[2] Born in New Haven, Connecticut, Corcoran gained the nicknames Corky and Tommy the Cork.

Corcoran set a still-standing ML record for shortstops with 14 assists in a nine-inning game.

[4][9] After being released by the Giants in July 1907, Corcoran played for a few minor league teams in 1907 and 1908, including the Uniontown Coal Barons.