Dominic Joseph Mulrenan (December 18, 1893 – July 27, 1964) was a pitcher in Major League Baseball.

[3] Mulrenan did not reach the major leagues until 1921 with the White Sox, whose roster was left with several vacancies after eight players were banned for life following the Black Sox scandal.

[4] In the words of Arthur Duffey, Mulrenan "had little luck" with the White Sox[5] before being optioned to the minor league Minneapolis Millers at the end of August.

Two of his sons became Catholic priests[7] and another pitched collegiately at Boston College.

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