| N&N | Niece And Nephew 
| Others |
| NN | Naked News
| Others |
| NN | Nameless Nobody
| Others |
| NN | Nannofossils Neogene
| Others |
| NN | Nano-Crystal
| Others |
| NN | Nanonet And
| Others |
| NN | Narcolepsy Network
| Others |
| NN | Nationale-Nederlanden
| Others |
| NN | Navajo Nation
| Others |
| NN | Nearest Neighbor
| Others |
| NN | Nearest Neighbours
| Others |
| NN | Nearly Nude
| Others |
| NN | Negative or Minus connection
| Others |
| NN | Neo-Natal
| Others |
| nn | nerves
| Others |
| NN | Netscape Navigator
| Others |
| NN | Netscreen News
| Others |
| NN | Neural Network
| Others |
| NN | Neutral Network
| Others |
| NN | Nevada News
| Others |
| NN | Nevada Northern Railway
| Others |
| NN | New Name
| Others |
| NN | Newport News
| Others |
| NN | Next New
| Others |
| NN | Next Next
| Others |
| NN | Nigeria Navy
| Others |
| NN | Nightmare Ninjas
| Others |
| NN | No Name
| Others |
| NN | No Names
| Others |
| NN | No need
| Others |
| NN | No Neighbourhood
| Others |
| NN | No News
| Others |
| NN | No No
| Others |
| NN | No Notice
| Others |
| NN | No NULL
| Others |
| NN | Noch Nicht
| Others |
| NN | Nomen Nescio
| Others |
| NN | Non Nuclear
| Others |
| NN | Non Nucleoside
| Others |
| NN | Non Nude
| Others |
| NN | Nonlinear And Narrow
| Others |
| NN | Noon NN
| Others |
| NN | Normal To Normal
| Others |
| NN | NormalNull
| Others |
| NN | North Nocturne
| Others |
| NN | Northern Neck
| Others |
| NN | Northern Nevada Railroad Corporation
| Others |
| NN | Norwegian (Nynorsk)
| Others |
| NN | Not Necessary
| Others |
| NN | Not Negotiated
| Others |
| nn | Not Now
| Others |
| NN | Not Null
| Others |
| NN | Noun And
| Others |
| NN | Numismatic News
| Others |
| NN | Nurse Notes
| Others |
| NN | Nurturing Network
| Others |
| NN | Ny Numeral
| Others |