regent
governing official in the absence or incapacity of a monarch
Regent of Hungary
historical office; head of state of Hungary between 1920 to 1944
Queen Regent
mother or spouse of a monarch governing the state because the monarch is minor, absent or incapacitated
Interrex
type of Polish regent
Regent
representation of the monarch during a throne vacancy
West Bangka Regent
governing official in Indonesia
regent of Sweden
political position
Prince regent
Prince who rules in place of a monarch due to incapacity or absence
regent of France
title of the leader of France, during the minority or absence of the king
viceroy
representative of a monarch