Fanjakana is a town and commune in Madagascar. It belongs to the district of Beroroha, which is a part of Atsimo-Andrefana Region. The population of the commune was estimated to be approximately 4,000 in 2001 commune census.

Primary and junior level secondary education are available in town. The majority 92% of the population of the commune are farmers, while an additional 6% receives their livelihood from raising livestock. The most important crop is rice, while other important products are beans and maize. Services provide employment for 2% of the population.

21°41′S 45°7′E / 21.683°S 45.117°E / -21.683; 45.117