Virgin Mobile is the UK's leading mobile virtual network operator (MVNO) with more than four million customers.

It is a brand used by many mobile phone service providers based in the United Kingdom, and operating in India, Australia, Canada, South Africa, the United States and France; the brand survived only briefly in Singapore. The international Virgin Mobile businesses each act as independent entities, usually in a partnership between Sir Richard Branson's Virgin Group and an existing phone company. Virgin Group provides the brand, and the phone company operates the network infrastructure. Virgin Mobile was the worlds first Mobile Virtual Network Operator when it launched in the United Kingdom in 1999. It does not maintain its own network but instead contracts to use the existing network(s) of other providers.

Following the completion of NTL's acquisition of Virgin Mobile Holdings (UK) plc on 4 July 2006, Virgin Mobile's shares were delisted from the London Stock Exchange on 4 July 2006 and the combined company was rebranded Virgin Media on 8 February 2007.