SUP - Wikipedia
https://en.wikipedia.org/wiki/SUP
Sup or SUP may refer to: Supremum or sup, in mathematics, the least upper bound. Societas unius personae, proposed EU type of single-person company. SUP Media or Sup Fabrik, a Russian internet company. Sailors' Union of the Pacific. Scottish Unionist Party (1986), established in the mid 1980s.