The narwhal is a species of whale with a distinctive long tusk.
Narwhal may also refer to:
- Narwhal (whaling vessel), a whaling ship used between 1883 and 1907
- HMS Narwhal, several ships of the British Royal Navy
- USS Narwhal, several US Navy ships
- Narwhal-class submarine, US submarines
- Project Narwhal, a computer program used in Barack Obama's 2012 presidential campaign
- The Narwhal, Canadian environmental magazine
- Nexter Narwhal, a 20mm remotely controlled naval autocannon