Kyiso (, ; c. 1000–1038) was king of Pagan dynasty from 1021 to 1038. According to the Burmese chronicles, Kyiso was a son of King Nyaung-u Sawrahan but raised by King Kunhsaw Kyaunghpyu. Kunhsaw married Nyuang-u's three chief queens, two of whom were pregnant and subsequently gave birth to Kyiso and Sokkate. Sokkate and Kyiso were raised by Kunhsaw as his own sons. When the two sons reached manhood, they forced Kunhsaw to abdicate the throne and become a monk.
Kyiso was an avid hunter, and was killed in a hunting accident near Monywa. He became Yoma Shin Mingaung Nat or a spirit in Burmese folk religion.