UB may refer to: PlacesUb, Serbia, a town in SerbiaUb (river), a river in SerbiaUB postcode area, in London, EnglandUlan Bator, Mongolia Organizations and businessesUltimateBet, an online poker siteUngermann-Bass, a computer networking company in CaliforniaUnited Biscuits, a British and European food manufacturerUnited Breweries Group, a brewery conglomerate in IndiaUrząd Bezpieczenstwa (1945-1954), part of the Polish secret policeChurch of the United Brethren in Christ, also known as the… (More on Ub)