Theodore Harrison Easterly (April 20, 1885 – July 6, 1951) was a catcher in Major League Baseball who played for the Cleveland Naps (1909–1912), Chicago White Sox (1912–1913) and Kansas City Packers (1914–1915).

From 1910 to 1912, he collected three consecutive .300 seasons with a high .324 in 1911 and led the American League with 11 pinch-hits in 1912.

A good defensive player with a solid throwing arm, he also served as a backup right fielder.

In a seven-season career, Easterly was a .300 hitter with eight home runs and 261 RBI in 706 games played.

This biographical article relating to an American baseball catcher born in the 1880s is a stub.