Oxo or OXO may refer to:
Astronomy Oxo (crater), an impact crater located in dwarf planet Ceres
Business Oxo (food), a brand of food products in the UK, South Africa and Canada Oxo Tower, a London landmark formerly owned by the makers of Oxo food products OXO (kitchen utensils brand), a US-based manufacturer of ergonomic handheld kitchen utensils
Chemistry Oxo ligand, a divalent ligand oxo-, a prefix in the formal IUPAC nomenclature for the functional group '=O' (a substituent oxygen atom connected to another atom by a double bond) Hydroformylation, an industrial process for the production of aldehydes from alkenes Oxo Biodegradable, degradation resulting from oxidative and cell-mediated phenomena, either simultaneously or successively Oxo alcohol, alcohols that are prepared by adding carbon monoxide (CO) and hydrogen
Computing OXO (video game), one of the first video games, a version of tic-tac-toe from 1952
Music OXO (band), an 80s New Wave pop band "OXO", a 2015, number one US dance song, by Olivia Somerlyn
Sports Oxo (horse), a racehorse, winner of the 1959 Grand National
Other uses Tic-tac-toe (OXO, and various other synonyms) a pen-and-pencil game
See also Oxxo Tic Tac Toe (disambiguation) Noughts and crosses (disambiguation)