United Sabah National Organisation
Founded: 23 December 1961
Dissolved: 5 August 1993
Once the linchpin party of Sabah Alliance, which it joined in 1967 and helped form Sabah BN in 1973. In 1976, a split between president Mustapha Harun and secretary-general Harris Salleh led the latter to resign and form Berjaya. The new party defeated USNO in that year's state election and was co-opted into BN at national and state levels, leading USNO to quit Sabah BN. On 15 April 1984, USNO was fully expelled. Before the Malaysia General Election in 1986, it rejoined BN along with PBS, causing Berjaya to exit the coalition. In 1990, several USNO members including Mustapha left and reunited with Berjaya to establish Sabah UMNO. The eroded USNO was ousted from BN again in 1993 for working with PBS, both returning to opposition status, and was eventually de-registered. An offshoot, USNO Party or USNO Baru (New USNO) for short, was set up in 2011 and formed United Borneo Alliance with SAPP and STAR before its registration was approved on 28 August 2013, 20 years after the original party ceased to exist.
Related organisation
United Sabah National Organisation Party