Nub or NUB may refer to:
- Nub, a variation of newbie
- Nub, a slider based analog controller on Pandora and PlayStation Portable
- ISO 639-2 code for the Nobiin language of Nubia
- Northern University, Bangladesh, a private university in the Bangladesh
- NUb, a cigar brand manufactured by Oliva Cigar Co.
- National Union of Blastfurnacemen, Ore Miners, Coke Workers and Kindred Trades, a defunct trade union in the United Kingdom
- Nub, colloquialism for pointing stick on a laptop
- NUB refers to Nahda University, Egypt