William James Hollahan (November 22, 1896 – November 27, 1965) was a third baseman in Major League Baseball. He played for the Washington Senators.
Bill Hollahan
| Given name: | William James Hollahan |
| Nicknames: | Happy |
| Primary Pos: | Thirdbase |
| Hght/Wght: | 5'8" / 165 lbs |
| Bats/Throws: | R / R |
| Born: | Nov 22, 1896 in New York, NY |
| Died: | Nov 27, 1965 in New York, NY (69 years old) |
| Debut: | Sep 27, 1920 |