John Richard Gabler (October 2, 1930 – February 7, 2009) nicknamed "Gab", was a Major League Baseball pitcher who played in 1959, and 1960 with the New York Yankees, and in 1961 with the Washington Senators.

Gabler pitched for Class-D Belleville Stags in 1949 and Independence Yankees in 1950 posting losing records with ERAs above 4.00 in both seasons.

He enjoyed perhaps his finest pro season in 1958, going 19-7 with a 4.27 ERA, setting career highs in wins, starts, complete games, and innings pitched.

Two weeks shy of his 29th birthday, Gabler made his major league debut on September 18, 1959, at Yankee Stadium against the Boston Red Sox.

In his next outing on September 23 against the Washington Senators, Gabler tossed 4.0 innings of relief, allowing one run on five hits and earning his first MLB win.

Gabler broke camp with the Yankees in 1960 and threw 7.0 shutout innings in his season debut against Boston, earning the win.

Working mostly in relief, Gabler earned his first MLB save (not yet an official statistic) with 3.0 scoreless innings to finish a 10–6 win over the Cleveland Indians.

While the Yankees won the American League pennant that season, and ultimately lost the 1960 World Series in seven games, Gabler was not around for the postseason.