| Tim Callahan | |
| State House: | Montana |
| State: | Montana |
| District: | 21st |
| Term: | 2000 - 2008 |
| Party: | Democratic Party |
| Birth Date: | 9 February 1955 |
| Birth Place: | Billings, Montana |
| Alma Mater: | University of Montana, Montana State University |
| Profession: | Juvenile probation officer |
| Spouse: | Ingrid |
| Residence: | Great Falls, Montana |
Terrence M. "Tim" Callahan was a Democratic Party member of the Montana House of Representatives, representing District 21 from 2000 till 2008. Callahan served as a member of the Appropriations Committee and its Joint Appropriations Subcommittee on Long-Range Planning.[1] A term-limits law prevented him from contesting the 2008 election to the House.[2]