John Cornelius "Jack" Rafter (February 20, 1875 – January 5, 1943) was a Major League Baseball catcher who played in 1904 with the Pittsburgh Pirates.

In one game, he went hitless in three at-bats.

He attended Fordham University.

He was born in and died in Troy, New York.

This biographical article relating to a United States baseball catcher born in the 1870s is a stub.