NTL may refer to:
Companies
NTL Incorporated and NTL Internet, later Virgin Media, communications media company NTL Ireland, later Virgin Media Ireland Arqiva, UK company formerly NTL Broadcast and National Transcommunications Limited Northern Trains, with the legal name Northern Trains Limited, a train operating company across the north of England
Academia
National Training Laboratories, Alexandria, Virginia, US, psychology center National Transportation Library, US
Code Netley railway station, Eastleigh, England, National Rail station code Newcastle Airport (New South Wales), Australia, IATA code Notylia, a genus of orchids
Sport
Former National Tennis League National Touch League, a touch rugby competition, Australia
Other Nevertheless (band), a Christian rock band Number Theory Library, a computer library Normal Tidal Limit in a river affected by tides Ntl (trigraph), used in the Xhosa language to write the sound /ntɬʼ/ Norsk Tjenestemannslag, a Norwegian trade union