NTL may refer to: - NTL Ireland, a cable television and MMDS company in the Republic of Ireland
- NTL:Telewest and NTL Internet, known since February 2007 as Virgin Media, a company involved in television, Internet, mobile phone, and fixed-line telephone services, especially in the United Kingdom, and owner of domain ntl.com
- NTL Broadcast, known since January 2005 as Arqiva, one of the two main transmitter and broadcast companies in the United Kingdom
- Newcastle Airport (Williamtown), the IATA code for the airport serving Newcastle, Australia
- Air Anatolia's ICAO code
- National Training Laboratories, a community based in Alexandria, Virginia, and devoted to applied social psychology
- National Transcommunications Limited or "Transcom", a company established to operate the assets of the Independent Broadcasting Authority's Engineering Division in the United Kingdom; known since January 2005 as Arqiva
- Ntl, the Notylia genus of orchids
- Nevertheless (band), a Christian rock band
- National Touch League a touch football competition held annually in Australia
- Number Theory Library a library for doing Number Theory (see http://www.shoup.net/ntl/).
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