James Joseph Nealon (December 15, 1884 – April 2, 1910) was a professional baseball player.

In his rookie season in 1906, he tied for the National League lead in RBIs with 83 with Harry Steinfeldt.

The next year, he contracted tuberculosis, ending his baseball career.

[1] In 259 games over two seasons, Nealon posted a .256 batting average (240-for-937) with 111 runs, 31 doubles, 20 triples, 3 home runs, 130 RBI, 26 stolen bases and 76 bases on balls.

This biographical article relating to an American baseball first baseman is a stub.