UB may refer to:
Uber Technologies Inc. is a transportation network company headquartered in San Francisco, California, United States, operating in 570 cities worldwide.
Ubuntu releases are made semiannually by Canonical Ltd, the developers of the Ubuntu operating system, using the year and month of the release as a version number.
UBS AG is a Swiss global financial services company, incorporated in the Canton of Zurich, and co-headquartered in Zürich and Basel.
Ubiquitin is a small (8.5 kDa) regulatory protein that has been found in almost all tissues (ubiquitously) of eukaryotic organisms.
UB40 are an English reggae and pop band, formed in December 1978 in Birmingham, England. The band has had more than 50 singles in the UK Singles Chart, and has also achieved considerable international success.
Uber Technologies Inc, is an American international technology company and transportation network company (TNC) with subsidiaries in many countries.
Ubisoft Entertainment SA (formerly Ubi Soft Entertainment Software), doing business as Ubisoft (formerly Ubi Soft), is a French multinational video game publisher, headquartered in Rennes, France.