Amapa may refer to:
- Amapá, one of the states of Brazil
- Amapá (municipality), a municipality in that Brazilian state
- Amapa, Nayarit, a town in the Mexican state of Nayarit
- Amapa morada, common name for the tree Handroanthus impetiginosus, in the family Bignoniaceae, which ranges from northern Mexico to Argentina
- Amapa, common name for the tree Parahancornia fasciculata, in the family Apocynaceae, from the Amazon rainforest