Dum Diversas

Dum Diversas (english: Until different) is a papal bull issued on 18 June 1452 by Pope Nicholas V. Addressed to Afonso V of Portugal, it recognized Portugal's rights to territories it had discovered along the West African coast, and the reduction of the infidels and non-Christians territories to perpetual vassals of the Christian monarch.

Pope Calixtus III reiterated this in the 1456 bull Inter caetera (not to be confused with Alexander VI's bull of the same title), renewed by Pope Sixtus IV in 1481 and Pope Leo X in 1514 with Precelse denotionis. The concept of the consignment of exclusive spheres of influence to certain nation states was extended to the Americas in 1493 by Pope Alexander VI with Inter caetera.