| United Pasok Momogun Organisation | |
| Native Name: | Pertubuhan Pasok Momogun Bersatu |
| Abbreviation: | Pasok Momogun / UPMO |
| Founder: | G.S. Sundang |
| Leader: | G.S. Sundang |
| Foundation: | January 1962 |
| Split: | United National Kadazan Organisation (UNKO) |
| Dissolution: | May 1964 |
| Merger: | Reunite back with UNKO to form UPKO (May 1964) |
| Successor: | United Pasokmomogun Kadazan Organisation (UPKO) |
| Headquarters: | Sabah |
United Pasok Momogun Organisation (Malay: Pertubuhan Pasok Momogun Bersatu; abbrev:Pasok Momogun or UPMO) is an ethnically-based political party in North Borneo (later Sabah, Malaysia).[1] [2] It was a splinter party of United National Kadazan Organisation (UNKO); founded by Donald Stephens earlier in 1961. The breakaway UPMO formed by Orang Kaya Kaya (OKK) Datuk G.S. Sundang, in January 1962 to fight for the interest of Kadazan-Dusun-Murut (KDM) races; with the supports and encouragement of the Chinese in Sabah.[1] The split was in reaction and protest to the suggestion of the Prime Minister of Malaya, Tunku Abdul Rahman to create a new federation country named Malaysia, dubbed Projek Malaysia.
In May 1964, UPMO eventually reunited with its parent party UNKO which had earlier entered into a coalition with the United Sabah National Organisation (USNO) and the Sabah Chinese Association (SCA) to form a new consociationalism Government of Sabah with Stephens became the state's first Chief Minister, upon the successful formation of Malaysia in 1963,.[3] With the reunification of UPMO back into UNKO had renamed itself as United Pasokmomogun Kadazan Organisation (UPKO) in June 1964.[4] [2]