John H. Lynch (February 5, 1857 – April 20, 1923) was an American Major League Baseball pitcher from 1881 to 1890.

He played for the Buffalo Bisons, New York Metropolitans, and Brooklyn Gladiators.

His pitch selection included a drop curve and an "inshoot", which was probably the modern screwball.

[1] The New York Clipper wrote of Jack Lynch:

This biographical article relating to an American baseball pitcher born in the 1850s is a stub.