| Gustav Ortner | |
| Birth Date: | 1935 2, df=y |
| Birth Place: | Vienna, Austria |
| Nationality: | Austrian |
| Education: | Vienna University of Economics and Business University of Vienna |
| Office: | Austrian Ambassador to the Holy See |
| Term Start: | 1997 |
| Term End: | 2001 |
Gustav Ortner (17 February 1935 – 7 February 2022) was an Austrian diplomat. He was Austrian Ambassador to the Holy See from 1997 to 2001.[1] He died on 7 February 2022, at the age of 86.[2]