Prince Kūhiō Day is an official holiday in the state of Hawaiʻi in the United States. It is celebrated annually on March 26, to mark the birth of Prince Jonah Kūhiō Kalanianaʻole — heir to the throne of the Kingdom of Hawaiʻi, prince of the House of Kalākaua, and later territorial delegate to the United States Congress. It was established in 1949 by the legislature of the Territory of Hawaii.
