John Peltz (April 23, 1861 – February 27, 1906) was a professional baseball player in the 19th century.

Peltz first played with the Indianapolis Hoosiers, in 1884 at the age of 23.

In 1890, his last year in the major leagues, he played with three teams, the Brooklyn Gladiators, Syracuse Stars, and the Toledo Maumees.

He would continue to play with various minor league clubs until 1893, retiring with the Montgomery Colts.

This biographical article relating to an American baseball outfielder born in the 1860s is a stub.