Isalo is a rural municipality in Madagascar. It belongs to the district of Miandrivazo, which is a part of Menabe Region. The population of the commune was estimated to be approximately 12,930 in 2009.

Only Primary schooling is available. The majority 50% of the population of the commune are Farmers, while an additional 30% receives their livelihood from raising livestock. The most important crop is beans, while other important products are maize and rice. Services provide employment for 10% of the population. Additionally, fishing employs 10% of the population.

This municipality is situated at 38 km south-west of Miandrivazo. Only unpaved secondary roads lead to the municipality. These are praticable but in a bad state of conversation and it takes 1.1/2h to reach the village.

8 villages (fokontany) are part of the municipality:

• Isalo - 2750 habitants
• Analambiby - 3524 habitants
• Soatana Morlot - 955 habitants
• Antsikida - 1250 habitants
• Bepaha - 1204 habitants
• Mahatsinjo - 1205 habitants
• Adabozato - 900 habitants
• Soafaniry Mahavelo (also called Beoro) - 1142 habitants

The Tsiribihina River and the Mahajilo River that flows west of Bepaha in this municipality.

19°44′S 45°26′E / 19.733°S 45.433°E / -19.733; 45.433