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). Easterly batted left-handed and threw right-handed. He was born in Lincoln, Nebraska.
Easterly was a good contact hitter who batted over .300 four times. 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. He jumped to the Federal League in 1914 and ended the season third in the batting race with a .335 average. 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.
Easterly died in Clearlake Highlands, California, at the age of 66.