| Birth Date: | 28 July 1899 |
| Birth Place: | Antwerp, Belgium |
| Death Date: | 4 November 1923 (aged 28) |
| Death Place: | Antwerp, Belgium |
| Show-Medals: | yes |
François "Frans" De Haes (28 July 1899[1] – 4 November 1923) was a Belgian weightlifter who won a gold medal at the 1920 Summer Olympics in Antwerp.[2] He set one world record in the clean and jerk in 1922.
To escape the German occupation, his family fled from Antwerp to the Netherlands, where he started weightlifting at age 17. After the war he returned to Antwerp. While preparing for the 1924 Summer Olympics, he caught influenza and died at age 28.[3]