| Lars Musæus | |
| Birth Date: | 9 August 1908 |
| Birth Place: | Ålesund, Norway |
| Nationality: | Norwegian |
| Sport: | Sailing |
Lars Musæus (9 August 1908 - 7 June 1975) was a Norwegian sailor.
Born in Ålesund on 9 August 1908, Musæus competed at the 1948 Summer Olympics in London, where he placed fourth in the 6 metre class, together with Magnus Konow, Ragnar Hargreaves, Anders Evensen and Håkon Solem.[1]