List of Sinhalese female monarchs
Although there were over 180 monarchs who ruled the Sinhalese Monarchy, there have only been 5 Sinhalese female monarchs. Three ruled during the Anuradhapura Period, another two during the Polonnaruwa Period. Anula was the first known Queen regnant found both within Sri Lankan history and during Anuradhapura period. She is also considered as the first female head of state in Asia. Being come to known first as the consort of King Chora Naga, son of King Valagambahu of Anuradhapura, she is infamous for killing at least 6 of her husbands or consorts by poisoning them . The second husband of her, Kuda Tissa, was actually the son of the brother of "Chora Naga" and rose to the throne as his legal successor. But her other husbands who rose to the throne as the King of Sri Lanka were not his legal successors and were only the husbands of then present legal successor, "Anula". They are (in chronological order) Siva I, Vatuka, Darubhatika Tissa and Niliya, who ruled the country within just one year. After the death of her final husband "Niliya", she became the sole ruler of the country for about 5 years thus becoming the  first known female monarch of Sri Lanka, but was the real power behind the King during the tenures of all of her husbands, also. At the end of her tenure, she was deposed by Mahakuli Mahatissa's second son, Kutakanna Tissa. The "Mahavamsa" states that "Kutakanna Tissa" had "Anula" burned on a funeral pyre. Other sources indicate that "Anula" was burned alive in the palace where she had committed her murders. She was from the House of Vijaya. Sivali was the second known female monarch within Sri Lankan history and succeeded her brother Chulabhaya. She only ruled the country for  about 4 months within the year 35 AD and was succeeded by her nephew Ilanaga, presumably the son of her brother "Chulabhaya", after an interregnum of 3 years. She was also from the House of Vijaya. Chattagahaka Jantu was the Queen regnant of Anuradhapura for about one year from 434 AD to 435 AD. She succeeded her step brother Soththisena as the "Queen of Anuradhapura" and was succeeded by Mittasena. "Mittasena" had a reputation as a plunderer of crops from farmers. Queen "Chattagahaka Jantu's" Chief Minister orchestrated "Mittasena's" accession. The Chief Minister wanted to ascend the throne himself , but enthroned "Mittasena" as his puppet ruler. "Mittasena" was kept out of the sight of the public even though it was the custom of kings to participate in festive events. The Chief Minister kept the administration of the country in his hands. She was from the House of Lambakanna I.