| Maissemy | |
| Commune Status: | Commune |
| Arrondissement: | Saint-Quentin |
| Canton: | Saint-Quentin-1 |
| Insee: | 02452 |
| Postal Code: | 02490 |
| Mayor: | Régine Michaut[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | Pays du Vermandois |
| Coordinates: | 49.8942°N 3.1883°W |
| Elevation M: | 98 |
| Elevation Min M: | 71 |
| Elevation Max M: | 123 |
| Area Km2: | 8.17 |
Maissemy is a commune in the Aisne department in Hauts-de-France in northern France.
| 2001–2020 | Dominique Trepant | |
| 2020–incumbent | Régine Michaut |