Joel Inez "Sailor" Newkirk (June 1, 1896 – January 22, 1966) was a pitcher in Major League Baseball.

His younger brother is former Major League Baseball pitcher Floyd Newkirk.

Joel served as a Boatswain Mate 1st Class in the United States Naval Reserve during World War I.

Elias's brother, Abraham, was a direct ancestor of Steve Comer, another Major League pitcher, and actor Dash Mihok; this makes both Comer and Mihok 5th cousins, twice removed of Joel.

This biographical article relating to an American baseball pitcher born in the 1890s is a stub.