Gerhard Hartmann (born 12 January 1955 in Reutte) is a retired long-distance runner from Austria, who won the Vienna Marathon three times in a row, starting in 1985. He represented his native country in the men's marathon at the 1984 Summer Olympics in Los Angeles, California. Hartmann set his personal best (2:12:22) on April 13, 1986, winning his second title in Vienna.
| 1983 | World Championships | Helsinki, Finland | — | Marathon | DNF |
| 1984 | Olympic Games | Los Angeles, United States | — | Marathon | DNF |
| 1985 | Vienna Marathon | Vienna, Austria | 1st | Marathon | 2:14:59 |
| 1986 | Vienna Marathon | Vienna, Austria | 1st | Marathon | 2:12:22 |
| 1987 | Vienna Marathon | Vienna, Austria | 1st | Marathon | 2:16:10 |
| 1988 | London Marathon | London, England | 13th | Marathon | 2:13:33 |
| 1988 | Berlin Marathon | Berlin, Germany | 12th | Marathon | 2:15:38 |
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