| Aarne Castrén | |
| Full Name: | Aarne Frithiof Louis Castrén |
| Nationality: | Finnish |
| Birth Date: | 2 September 1923 |
| Birth Place: | Helsinki, Finland |
| Death Place: | Helsinki, Finland |
| Sport: | Sailing |
Aarne Frithiof Louis Castrén (2 September 1923 – 2 January 1997) was a Finnish sailor. He competed in the 5.5 Metre event at the 1952 Summer Olympics.[1]