| Donald Adam Hartman | |
| Office: | 33rd Mayor of Calgary |
| Predecessor: | Ralph Klein |
| Successor: | Al Duerr |
| Term Start: | March 21, 1989 |
| Term End: | October 23, 1989 |
| Birth Date: | 3 August 1929 |
| Birth Place: | Calgary, Alberta |
| Death Place: | Calgary, Alberta |
Donald Adam Hartman (August 3, 1929 - July 5, 1996) was the 33rd Mayor of Calgary from March 21, 1989, to October 23, 1989.[1] He had been a city Alderman since October 22, 1969. As senior Alderman Hartman was appointed Mayor following Ralph Klein's resignation, serving only until the regular city elections that October. He died of cancer in 1996.[2] [3]