Saipan (/saɪˈpæn/) is the largest island and capital of the Northern Mariana Islands, an unincorporated territory of the United States in the western Pacific Ocean. According to 2020 estimates by the United States Census Bureau, the population of Saipan was 43,385. Its people have been United States citizens since the 1980s. Saipan is one of the main homes of the Chamorro, the indigenous people of the Mariana Islands.
From the 17th century, the island experienced Spanish occupation and rule until the Spanish–American War of 1898, when Saipan was briefly occupied by the United States, before being formally sold to Germany. About 15 years of German rule were followed by 30 years of Japanese rule, which was ended by the Battle of Saipan, as the United States began to take control of the Philippine Sea. Following World War II, Saipan became part of the Trust Territory of the Pacific Islands, and was administered by the United States, along with rest of the Northern Marianas. In 1978, Saipan formally joined the United States as part of the Commonwealth of the Northern Mariana Islands.