The dignity, office, or jurisdiction of a viceroy.

a district or province governed by a viceroy

(English) The largest administrative district established by the Spanish crown in her colonies. Its head, the viceroy, was second in power only to the king. In 1700, there were two viceroyalties: New Spain and Perú. The Viceroyalties of Nueva Granada and Rio de la Plata were carved out of these in the 18th century.