John J. Morrissey (December 30, 1856 – April 29, 1884) was an American Major League Baseball player from Janesville, Wisconsin, who played third base for the 1881 Buffalo Bisons.

His Major League career lasted 12 games over the course of 13 days.

His brother Tom Morrissey also played Major League Baseball.

[1] Morrissey died of consumption (tuberculosis)[2] in his hometown of Janesville, and is interred at Mount Olivet Cemetery.

This biographical article relating to a baseball third baseman is a stub.