The meaning of the Acronym NNO is...

NNO is

• National Night Out

More Meanings For NNO:

• National Network Office
• A Nerd's Night Out
• Nodes Not Obtained
• National Network Office
• National Night Out
• Norwegian ( Nynorsk)
• Nordnordost

NNO is also in:

• Funnies
• German
• Language Codes (3 Letters)
• Law
• Networking
• Unfiled
• US Government