John Christopher Martin (April 19, 1887 – July 4, 1980) was a weak-hitting, slick-fielding infielder in Major League Baseball, playing mainly at shortstop for three different teams between the 1912 and 1914 seasons.

[1] After a lengthy minor league baseball career, Martin entered the majors in 1912 as the regular shortstop for the Yankees, when they were known as the New York Highlanders.

In 1978 was honored by the Brick Township council for being an inspiration to youth, as the Jack Martin Boulevard is named after him.

[2] Martin suffered two heart attacks just after being introduced at the 34th annual New York Yankees Old-Timers' Day on June 21, 1980.

At the time of his death, at age 93, Martin was the oldest living former Yankees and Phillies player.