| Daniel Gallagher | |
| Birth Date: | 6 September 1896 |
| State Assembly: | California |
| District: | 23rd |
| Term: | January 2, 1939 – January 7, 1942 |
| Preceded: | William B. Hornblower |
| Succeeded: | William Clifton Berry |
| Party: | Democratic |
Daniel Gallagher (September 6, 1896 – May 6, 1956) was the Sheriff of the City and County of San Francisco from 1952–56. During his tenure he fought for prison reform and higher pay for women employees.[1] Prior to being appointed Sheriff, he was a member of the San Francisco Board of Supervisors.[1]
Gallagher also served as a member of the California State Assembly for the 23rd district from 1939 to 1942.[2]