Lamosina is a village and commune in Madagascar.

It belongs to the district of Vohibato, which is a part of Haute Matsiatra Region.

Lamosina is situated 26 km from Fianarantsoa, the nearest town and capital of the Betsileo, in the centre of Madagascar Island, in The Hauts Plateaux ("High Lands") and 450 km from Antananarivo, the capital.

Lamosina (literally "back") had its name because it is the extreme village seen from the roof [tafo] of the rock, roof that is like a bump or a back lamosina.

Primary and junior level secondary education are available at Lamosima.