| Acronym | Definition |
|---|
| SEU➣Southeast University (China) |
| SEU➣St. Edward's University (Austin, Texas) |
| SEU➣Shoot 'Em Up (game category) |
| SEU➣Single Event Upset (of electronic circuit in space by a heavy particle; proton, etc) |
| SEU➣Southeastern University (various locations) |
| SEU➣Support and Events Unit |
| SEU➣Serials Update |
| SEU➣Single Event Upset |
| SEU➣Service Entrance Unarmored (cable) |
| SEU➣Social Exclusion Unit (UK) |
| SEU➣Source Entry Utility |
| SEU➣Sindicato Español Universitario (Spanish trade union) |
| SEU➣Sustainable Energy Utility (Delaware) |
| SEU➣Special Education Unit |
| SEU➣Socio-Ecological Union (Russia) |
| SEU➣Special Enforcement Unit |
| SEU➣Slightly-Enriched Uranium |
| SEU➣Structure and Evolution of the Universe (NASA) |
| SEU➣State Employees Union (various locations) |
| SEU➣Smallest Executable Unit |
| SEU➣System Electronics Unit |
| SEU➣Stupid End User |
| SEU➣Special Examining Unit |
| SEU➣Sight Electronics Unit |
| SEU➣Servo-Electronics Unit |
| SEU➣System Expansion Unit |
| SEU➣Seat Electronics Unit (aviation) |
| SEU➣Selective Excitation Unit |
| SEU➣Sign Extension Unit |
| SEU➣Switch Expansion Unit |