NLO

NLO may refer to:

• New London Orchestra
• Fernald Feed Materials Production Center
• Naval liaison officer
• Naval Live Oaks Reservation
• Wi-Fi Network List Offload
• Norman Lockyer Observatory
• Non-linear optical material
• Russian and Bulgarian transliterated abbreviation for UFO
• NLO, Russian print issue
• Nobody Likes Onions.
• Next to Leading Order, in the scientific context. This expression can be understood within the Taylor series formalism, referring to the second term of the series — though its use extends much further the Taylor series, which here has to be seen as an example only.