| Saint-Marceau | |
| Commune Status: | Commune |
| Arrondissement: | Mamers |
| Canton: | Sillé-le-Guillaume |
| Insee: | 72297 |
| Postal Code: | 72170 |
| Mayor: | Agnès Dubois-Schmitt[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | Haute Sarthe Alpes Mancelles |
| Coordinates: | 48.1797°N 0.1281°W |
| Elevation Min M: | 52 |
| Elevation Max M: | 107 |
| Area Km2: | 8.91 |
| Demonym: | Marcelin, Marceline |
Saint-Marceau (in French pronounced as /sɛ̃ maʁso/) is a commune in the Sarthe department in the region of Pays de la Loire in north-western France.
After the liberation of the area by Allied Forces in August 1944, engineers of the Ninth Air Force IX Engineering Command began construction of a combat Advanced Landing Ground outside of the town. Declared operational on 31 August, the airfield was designated as "A-43". It was used by several combat units until November 1944 when the units moved to Central France and the airfield was closed.[2]