NATM may refer to:

• the New Austrian Tunnelling method
• Not Another Teen Movie
• Night at the Museum, a 2006 film

• Nillu rat
• Nilma
• Nilmanifold
• Nil manifold
• Nilmar
• Nilmário Miranda
• Niloak Pottery
• Nilo Alcala
• Nilo, Cundinamarca
• Nilo de Oliveira Guimaraes
• Nilo de Oliveira Guimarães
• Nilofar Bakhtiar
• Nilofer Bakhtiar
• Nilo Guimaraes
• Nilo Guimarães
• Nilokheri
• Nilolay P. Barabashov
• Nilo Murtinho Braga
• Nilopegamys
• Nilopegamys plumbeus
• Nilopolis
• Nilo Procópio Peçanha
• Nilore, Islamabad
• Nilo-saharan language
• Nilosyrtis