Joseph Aloysius Connolly (February 1, 1884 – September 1, 1943) was an American left fielder in Major League Baseball who played his entire career for the Boston Braves from 1913 through 1916.

A native of North Smithfield, Rhode Island, Connolly was a prominent member of the 1914 Boston Braves World Champions.

Drafted by the Washington Senators of Clark Griffith in 1913, he was sold immediately to the Boston Braves, to become the team's regular left fielder.

Thought his rookie Major League season ended prematurely when he broke his ankle, Connolly led the Braves in average (.281), runs (79), RBI (57), triples (11), and slugging percentage (.410), in 126 games played.

He hit .111 (1-9) with a run and one RBI during the 1914 World Series, as the Braves defeated Connie Mack's heavily favored Philadelphia Athletics in four games.