Nisa (Portuguese pronunciation: [ˈnizɐ] ⓘ) is a municipality in Portalegre District in Portugal.

[2] The present Mayor is Maria Idalina Alves Trindade (PS - Partido Socialista).

The municipal holiday is Easter Monday.

In addition, it lends its name to Queijo de Nisa, a Portuguese sheep cheese with a protected designation of origin (PDO).

Administratively, the municipality is divided into 7 civil parishes (freguesias):[3]