Banaba is an island in the Pacific Ocean.
Banaba may also refer to:
- Banaba (Lagerstroemia speciosa), a type of tree that grows in most of Southeast Asia, including Thailand, the Philippines and Malaysia
- Banaba, an area in Batangas City, the Philippines
- Banaba, an area in Tarlac City, the Philippines
- Banaba, a district near Cotenna in Roman Asia Minor