UBB or Ubb may refer to:

• Babeș-Bolyai University in Cluj-Napoca, Romania
• University of Bangka Belitung in Pangkalpinang, Indonesia
• University of Bío Bío in Chile

• Ultimate Big Brother, British reality television show
• Ultimate Breaks and Beats, a series of compilation albums
• Usage Based Billing (UBB), a Canadian Radio-television and Telecommunications Commission regulation allowing Internet service providers to charge customers per gigabyte transferred

• UBB.classic, Social Strata's now-discontinued Perl-based internet forum
• BBCode text documents formatting ( '[b]bold[/b]' etc.)
• Ubiquitin B gene
• Unbibium, symbol Ubb for '122', a theoretical chemical element

• Union Bordeaux Bègles, a French rugby union team
• United Bulgarian Bank
• Usedomer Bäderbahn, a German regional railway serving the spa towns on the German and Polish island of Usedom
• Mabuiag Island Airport, IATA airport code "UBB"

This disambiguation page lists articles associated with the title UBB.
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