Dennis J. Clare (January 1853 – November 26, 1928) was a professional baseball player who played second base and shortstop in two games for the 1872 Brooklyn Atlantics team of the NAPBBP.

Prior to appearing with the 1872 Atlantics, Clare played for Brooklyn's Amity club.

He started both of his major league games at second base, but also played several innings at shortstop.

At the plate, Clare faced pitcher Candy Cummings in both games, and garnered one hit in seven at bats.

Throughout the 1870s, he played baseball with several different Brooklyn-based clubs until he moved to Witoka, Minnesota.