| Acronym | Definition |
|---|
| SEA | South East Asia |
| SEA | Southeast Asian (games) |
| SEA | Seattle Mariners (baseball team) |
| SEA | Strategic Environmental Assessment |
| SEA | Securities Exchange Act |
| SEA | NAVSEA (US Navy) |
| SEA | State Education Agency |
| SEA | Security Administrator |
| SEA | Single European Act (European single market treaty 1986) |
| SEA | Self Extracting Archive |
| SEA | Single Engine Aircraft |
| SEA | Samsung Electronics America |
| SEA | Southern and Eastern Africa |
| SEA | Secretaria de Estado de Agricultura (Dominican Republic) |
| SEA | Software Engineering and Applications |
| SEA | Self-Employment Assistance (Canada) |
| SEA | Statistical Energy Analysis |
| SEA | Senior Enlisted Advisor |
| SEA | Supplier Excellence Alliance (Irvine, CA) |
| SEA | Structural Engineers Association |
| SEA | SINR (Signal to Interference plus Noise Ratio) Exclusion Area |
| SEA | Senior Executives Association |
| SEA | Senior Enlisted Academy |
| SEA | Societa' Esercizi Aeroportuali (airports of Malpensa and Linate, Milan, Italy) |
| SEA | Soledad Enrichment Action |
| SEA | Seattle Education Association |
| SEA | Special Education Assistant |
| SEA | Society for Electronic Access |
| SEA | Science and Engineering Ambassador |
| SEA | Science and Education Administration |
| SEA | Significant Ecological Area |
| SEA | Secure Extranet Appliance (SafeWeb) |
| SEA | Society for Education in Anesthesia |
| SEA | State Economic Area |
| SEA | Semiconductor Equipment Assessment |
| SEA | Society of Equestrian Artists |
| SEA | Standard Extended Attribute |
| SEA | Supply Excellence Award (US Army) |
| SEA | State/EPA Agreement |
| SEA | St. Eustatius Alliance (Netherlands Antilles) |
| SEA | Service Educational Activities |
| SEA | Systems Evaluation Area |
| SEA | Successive Elimination Algorithm |
| SEA | Scientist's Expert Assistant (NASA) |
| SEA | State Education Authority |
| SEA | Simple and Efficient Algorithm |
| SEA | Strategic Enterprise Architecture |
| SEA | Sound Effect Amplifier (audio equipment) |
| SEA | Sea Echelon Area |
| SEA | Save the Environment Afghanistan |
| SEA | Society of Egyptian Architects (Cairo, Egypt) |
| SEA | Symposium on Experimental Algorithms |
| SEA | State External Affairs |
| SEA | Strategic Enterprise Agreement |
| SEA | Side-Effect Analysis |
| SEA | Subsistence Expense Allowance |
| SEA | State Enforcement Agreement |
| SEA | Suncoast Epilepsy Association, Inc. |
| SEA | Science Experience Abroad |
| SEA | Single-Element Antenna |
| SEA | Safeway Employee' Association |
| SEA | Systems Enhancement Associates |
| SEA | Seattle, WA, USA - Seattle Tacoma International Airport (Airport Code) |
| SEA | Ship/Equipment, Alterations |
| SEA | Smart Ethernet Adapter |
| SEA | Support Electronics Assembly |
| SEA | Safety Engineering Agent |
| SEA | Site Electrical Assessment |
| SEA | Survey on Economic Attitudes |
| SEA | Systems Engineering Association |
| SEA | Seagate Enterprise Architecture |
| SEA | Sleeman Employee Association (Ontario, Canada) |
| SEA | Sudden Enhancement of Atmospheres |
| SEA | Software Engineering Apprenticeship |
| SEA | Simplified Email Address |