| Acronym | Definition |
|---|
| NLO➣Nonlinear Optics |
| NLO➣Non-Linear Optimization (mathematics) |
| NLO➣Next-to-Leading Order |
| NLO➣National Labor Office |
| NLO➣Nobody Likes Onions (website) |
| NLO➣Novoe Literaturnoe Obozrenie (Russian: New Literary Observer; journal) |
| NLO➣Nasolacrimal Obstruction |
| NLO➣Naval Liaison Officer |
| NLO➣National Liaison Officer |
| NLO➣Network Loadable Objects |
| NLO➣Nepoznati Leteci Objekt (Croatian: unidentified flying object) |
| NLO➣NETg Learning Object |
| NLO➣No Load Operation (computer power supplies) |
| NLO➣New Little Odessa (gaming, Half-Life 2) |
| NLO➣Nasolacrimal Occlusion |
| NLO➣National Lead of Ohio Inc. |
| NLO➣No Lazy Offense |