Opsa je selo u Braslaŭski rajon, u Vitebska oblast, Bjelorusija. Opsa se nalazi na 163 m nadmorske visine. Broj stanovnika je 700. Najbliži veći grad je Navapolack, 110 km istočno. Među znamenitostima u okolici su Church of the Virgin Mary (17,6 km), Drysviaty Castle (12,9 km) i Church of Saint John the Baptist in Opsa (0,5 km). Među prirodnim znamenitostima su Braslawskaya Hrada (11,8 km).
Piše se i Опса.
Znamenitosti u okolici
- Church of Saint John the Baptist in Opsakatolička crkva
- Saints Peter and Paul Orthodox church in Drysviatyeastern Orthodox church building
- Church of Saints Peter and Paul, Drysviatykatolička crkva
- Drysviaty Castleutvrda
- Church of Protection of the Holy Virgin in Bohinaeastern Orthodox church building
- Church of the Dormition in Braslaŭeastern Orthodox church building
- Church of the Virgin Marykatolička crkva
- Ss. Boris and Gleb Cathedraleastern Orthodox cathedral