Kayoa, or in the native language Pulau Urimatiti, is a group of 66 islands, part of the Maluku Islands. It is located in South Halmahera Regency, part of North Maluku Province of Indonesia.

South Halmahera Regency is a regency of North Maluku Province, Indonesia. It lies partly on Halmahera Island and partly on smaller islands to the west and south of Halmahera. It covers a land area of 8,779.32 km2, and at the 2010 Census it had a population of 198,911 people, while the 2020 Census showed that this had risen to 248,395 and the official estimate in mid 2023 was 255,384 The capital lies at the town of Labuha on Bacan Island.