| Acronym | Definition |
|---|
| Emo | Emotion(s) |
| Emo | Emotional (music genre) |
| Emo | Emergency Measures Organization (Canada) |
| Emo | Emergency Management Ontario (Ontario, Canada) |
| Emo | Emergency Management Office |
| Emo | External Manual Operator |
| Emo | Electronic Maintenance Officer |
| Emo | Emoticon File |
| Emo | Encapsulated Multimedia Object |
| Emo | Evolutionary Multi-Objective Optimization |
| Emo | Emotional Rock (music, fashion) |
| Emo | Environmental Management Office |
| Emo | Ecumenical Ministries of Oregon (Portland, OR) |
| Emo | Emotive Hardcore (music genre) |
| Emo | Express Money Order (various locations) |
| Emo | Emergency Management Organization (Canada) |
| Emo | Emergency Off (definition used by SEMI) |
| Emo | Educational Management Organization |
| Emo | Executive Management Office (various organizations) |
| Emo | Office of Emergency Management Oversight (US DHS) |
| Emo | Exposition Mondiale de La Machine Outil |
| Emo | Eclipse Management Organization (software foundation) |
| Emo | Emergency Machine Off |
| Emo | Extra Man Onboard (US Navy) |
| Emo | Exercise for Men Only (magazine) |
| Emo | European Mortar Industry Organisation |
| Emo | Emergency Measures Office |
| Emo | Environnement Matériels Objectifs (French: Environmental Objectives Materials) |
| Emo | Exam Master Online |
| Emo | Equipment Management Office |
| Emo | Elektrik Mühendisleri Odasý (Turkey) |
| Emo | Environmental Management Ordinance |
| Emo | Effective Material Operator |
| Emo | Experienced Musicians Only |
| Emo | Electromagnetism and Optics |
| Emo | Early Morning Originator (airline industry) |
| Emo | Electronic Maintenance/Material Officer |
| Emo | Engage Missile Order |