Italics denotes acting speaker and states that are either de facto (with limited to no international recognition) or defunct.
List of female speakers of national and territorial upper houses Wikipedia
Upper house or usually called the Senate is the one of two chambers in the bicameral legislature. Upper house usually has less power than the lower house. In some countries, its members are appointed rather than elected by popular votes. Speaker of the upper house is the one who takes office as acting head of state in presidential republic. This list presents female speakers of upper house of their respective countries or territories.