Antananambo or Antanambao is a commune (Malagasy: kaominina) in northern Madagascar. It belongs to the district of Antalaha, which is a part of Sava Region. According to 2001 census the population of Antananambo was 18,232.

Only primary schooling is available in town. The majority 99% of the population are farmers. The most important crops are rice and vanilla, while other important agricultural products are sugarcane, cloves and cassava. Services provide employment for 1% of the population.

15°10′S 50°22′E / 15.167°S 50.367°E / -15.167; 50.367