| Oswald Haerdtl | |
| Nationality: | Austrian |
| Occupation: | Architect |
| Birth Date: | 17 May 1899 |
| Birth Place: | Vienna, Austria-Hungary |
| Death Place: | Vienna, Austria |
Oswald Haerdtl (17 May 1899 - 9 August 1959) was an Austrian architect. His work was part of the architecture event in the art competition at the 1936 Summer Olympics.[1]