Ambia may refer to:
Places and jurisdictions in Africa Ambia (Mauretania), an ancient former bishopric and present Latin Catholic titular see Ambia, Ihosy, Madagascar, a town Ambia, Mahabo, Madagascar, a town
Places and jurisdictions elsewhere Ambia, Indiana, US, a town Ambia, Texas, US, an unincorporated community Ambía River, a tributary of the Arnoia River in Spain Ambia (Anosy), a river in Madagascar
Other Ambia (moth), a genus of moths