| State House: | Montana |
| District: | 63rd |
| Term Start: | January 3, 1985 |
| Term End: | January 3, 1993 |
| Preceded: | Harrison Fagg |
| Succeeded: | Gary Mason |
| State House2: | Montana |
| District2: | 91st |
| Term Start2: | January 3, 1979 |
| Term End2: | January 3, 1985 |
| Preceded2: | John Driscoll |
| Succeeded2: | Bruce Simon |
| Bob Thoft | |
| Birth Name: | Robert Erwin Thoft |
| Birth Date: | 13 July 1929 |
| Birth Place: | Stevensville, Montana, U.S. |
| Death Place: | Stevensville, Montana, U.S. |
| Party: | Republican |
Robert Erwin Thoft (July 13, 1929 – February 8, 2009) was an American politician who served as a Republican member of the Montana House of Representatives from 1979 to 1993.[1]