Daniel C. Leahy (August 8, 1870 – December 30, 1903) was a shortstop in Major League Baseball.

Leahy was born in Nashville, Tennessee.

He started his professional baseball career in 1894, with the Lynchburg Hill Climbers of the Virginia League.

Leahy played in the minor leagues until 1900.

This biographical article relating to an American baseball shortstop is a stub.