The abbreviation NNN can stand for:

• New Nordic Norm, a type of binding for cross-country (nordic) skis. This binding improves upon the traditional three pin binding. The NNN binding is more rigid against twisting and lateral movement of the boot with respect to the ski while being more flexible regards to up and down heel movement. NNN bindings are lighter than its competitor, Salomon, who makes the SNS and the SNS Pilot system.
• N-Nitrosonornicotine, a nitrosamine carcinogen found in tobacco.
• NAM News Network, a news network set up by Non-Aligned countries
• Norsk Naerings- og Nytelsesmiddelarbeiderforbund, the Norwegian Union of Food, Beverage and Allied Workers
• Nippon News Network
• Triple net lease, a lease agreement where the renter is responsible for taxes, insurance, and miscellaneous charges.
• NeoNewsNow, a Neopets website