TNL

TNL may refer to:
 * Lenakel language, spoken in Vanuatu
 * National Liberal Youth (Romania) (Romanian: Tineretul Național Liberal), the youth organisation of the National Liberal Party of Romania
 * Ternopil Airport, serving Ternopil, Ukraine
 * TNL TV, a television channel in Sri Lanka
 * Toronto Northern Lights, a Toronto, Ontario-based men's chorus
 * Tramway de Nice et du Littoral, a public transportation system in Nice, France
 * TNL (political party), a political party in Australia
 * The National Lottery, a lottery company in the United Kingdom
 * Transform and lighting, a graphics card feature