Wikipedia
Hallahan
Hallahan may refer to:
- Bill Hallahan (1902–1981), American left-handed pitcher in Major League Baseball
- Charles Hallahan (1943–1997), American actor
- Margaret Hallahan (born 1803), English Catholic nun, foundress of the Dominican Congregation of St. Catherine of Siena
- Patrick Hallahan, American drummer with the Kentucky-based rock outfit My Morning Jacket