| Acronym | Definition |
|---|
| SER | Series |
| SER | Serial |
| SER | Service |
| SER | Serial Number |
| SER | Sermon |
| SER | Serbian (language) |
| SER | Serine (amino acid) |
| SER | Sociaal Economische Raad (Dutch: Socio-Economic Council) |
| SER | Society for Ecological Restoration |
| SER | Southeast Region (NPS) |
| SER | Southeast Region |
| SER | SIP Express Router |
| SER | Syndicat des Energies Renouvelables (French: Renewable Energy Union; est. 1993) |
| SER | Smooth Endoplasmic Reticulum |
| SER | Symbol Error Rate (similar to BER) |
| SER | South Eastern Railway |
| SER | Safety Evaluation Report (US Department of Energy) |
| SER | Servicios Educativos Rurales (Spanish: Rural Education Service; Peru) |
| SER | Statistical Error |
| SER | Soft Error Rate (data storage/retrieval) |
| SER | State Secretariat for Education and Research (Switzerland) |
| SER | Sociedad Española de Radiodifusión (Spanish Radio Society) |
| SER | Society for Epidemiologic Research |
| SER | Structural Engineer of Record |
| SER | Sequence of Events Recorder |
| SER | Asociacion Servicios Educativos Rurales (Spanish: Rural Educational Services Association; Peru) |
| SER | Supination External Rotation (type of fracture) |
| SER | Sociedad de Educación y Rehabilitación (Spanish: Society for Education and Rehabilitation; Puerto Rico) |
| SER | Surface Equivalente Radar (French: Radar Cross Section; stealth) |
| SER | Sentence Error Rate (machine translation evaluation) |
| SER | Syndicat des Equipements de la Route (French: Union of Road Equipment) |
| SER | Service d'Economie Rurale (French: Department of Rural Economy; Luxembourg) |
| SER | Socio-Economic Rehabilitation |
| SER | System Evaluation Report |
| SER | Spherical Equivalent Refraction |
| SER | Sequence of Events Recording |
| SER | Student Economic Review (journal; Trinity College Dublin) |
| SER | Staples Easy Rebate |
| SER | Satellite Equipment Room |
| SER | Foundation for Subjective Experience and Research |
| SER | Single Electron Response (photomultiplier parameter) |
| SER | Systems Engineering Report |
| SER | Search Engine Recognition |
| SER | Southern European Region |
| SER | Shemale Erotic Review |
| SER | Société d'Emulation de Roubaix (French: Society of Emulation of Roubaix; Nord, France) |
| SER | System Evaluation Record |
| SER | Shore Establishment Realignment |
| SER | SATCOM Equipment Report |
| SER | Subscriber Edge Router (Shasta Networks) |
| SER | Single Event Upset Ratio |
| SER | Software-Engineering Rodinger GmbH (Seligenstadt, Germany) |
| SER | System Element Review |
| SER | System Evolution Record |
| SER | Simultaneous Electrolytic Recovery (gold processing) |
| SER | Selected Early Release |
| SER | Skin-Effect Range (microstrip lines) |
| SER | Support Equipment Requirements Sheet |
| SER | Supportability Evaluation Report |
| SER | Support Equipment Requirement |
| SER | Société d'Evaluation Rwandaise |
| SER | Société d'Edition de Revue (French: Company Publishing Journal; various organizations) |
| SER | Search Engine Ranking (websites) |
| SER | Su Eminencia Reverendísima (Spanish: His Eminence) |