TNL may refer to:

• Lenakel language, spoken in Vanuatu
• National Liberal Youth (Romania) (Romanian: {{lang|ro|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

• Călina
• Călin Albuț
• Călina River
• Călin-Constantin-Anton Popescu-Tăriceanu
• Călin Constantin Anton Popescu-Tăriceanu
• Călin Cristea
• Călineasa River (Feneş)
• Călineasa River (Feneș)
• Călineasa River (Someșul Cald)
• Călinescu
• Călineşti (disambiguation)
• Călineşti River
• Călinești, Argeș
• Călinești, Fălești
• Călinești River
• Călinești River (Bistrița)
• Călinești River (Olt)
• Călinești, Teleorman
• Călin Gruia
• Călin Moldovan
• Călin Târnăvean
• Călin Vieru
• Călin Virgil Cristea
• Călmâiasa River
• Călmățui