| Type: | commune |
| County: | Covasna |
| Official Name: | Aita Mare |
| Other Name: | Nagyajta |
| Leader Name: | Edömér Bihari[1] |
| Leader Party: | UDMR |
| Term: | 2020 - 2024 |
| Coordinates: | 45.9667°N 58°W |
| Elevation: | 476 |
| Area Total: | 67.97 |
| Population Total: | auto |
| Postal Code: | 527005 |
| Area Code: | (+40) 02 67 |
Aita Mare (Hungarian: Nagyajta, Hungarian pronunciation: NaNa) is a commune in Covasna County, Transylvania, Romania composed of two villages: Aita Mare and Aita Medie (Középajta).
The commune is located in the western part of the county, on the border with Brașov County. It formed part of the Székely Land region of the historical Transylvania province.
The commune has an absolute Székely Hungarian majority. At the 2011 census, Aita Mare had a population of 1,715, of which 90.15% were Hungarian and 8.8% Romanian. At the 2021 census, the commune had a population of 1,626, of which 90.65% were Hungarian and 7.63% Romanian.[2]