Grover Allen Hartley (July 2, 1888 – October 19, 1964) was a backup catcher in Major League Baseball.

In a 14-season career, Hartley was a .268 hitter with three home runs and 144 RBI in 569 games played.

Hartley was a catcher with good defensive skills as he took responsibility for getting the most out of his pitchers, and worked hard at ensuring their success.

In 1914 he jumped to the outlaw Federal League, becoming a regular with the St. Louis Terriers for the next two years, and later shared catching tenures for the St. Louis Browns, Boston Red Sox, Cleveland Indians, and new stints with the Giants and Browns, retiring at the end of the 1934 season.

Between his stints with the Browns and Giants, he spent seven years in the minor leagues with the Columbus Senators.