O2

Look up o2 in Wiktionary, the free dictionary.

O2, o2, O₂, or O² may refer to:

Science and technology

Oxygen, by molecular formula (O₂)
O2, tablets containing Ofloxacin and Ornidazole, made by Medley Pharmaceuticals Ltd in India
SGI O2, a Unix workstation computer
UOC O2, UOC's institutional repository

O2 Global Network, an international network for sustainable design
O2TV, a Russian independent socially political TV channel
Telefónica Europe, a European telecommunications provider trading as O2 (typeset as O₂)
O2 Wireless USA, the former name of H2O Wireless, a prepaid wireless service offered in the USA by Locus Telecommunications
O2HD Films, Video, Film and Documentary Company operating in the Charlotte, NC Area

O₂ (Tonéx album), the second album by gospel artist Tonéx, released in 2002
O2: Avalon Remixed, the sixth album and first remix album by contemporary Christian band Avalon, released in 2002
O2 (O-Town album), the second and final album by the band O-Town, released in 2002
O2, a song on the Orange Range album Panic Fancy
"O2", a song on the 2002 Sleater-Kinney album One Beat
O₂ (FireHouse album), a 2000 album by the rock band FireHouse

O2 Centre, an indoor shopping and entertainment centre on Finchley Road, London
O2 Arena (Prague), the renamed Sazka Arena in Prague, Czech Republic
The O2 (London), a large entertainment district in London developed within the former Millennium Dome
- The O2 Arena (London), the arena within The O2
O2 Residence, a 41-floor tower part of the Jumeirah Lake Towers in Dubai, United Arab Emirates
O2 Store, a chain of retail stores owned and operated by Telefónica Europe
O2 World (Berlin), indoor arena in Berlin, Germany
O2 World (Hamburg), indoor arena in Hamburg, Germany