| Acronym | Definition |
|---|
| SSIA➣Social Services Improvement Agency (various locations) |
| SSIA➣Shoe Service Institute of America |
| SSIA➣Special Savings Incentive Account |
| SSIA➣State Systemwide Investment Approach (California) |
| SSIA➣Subject Says It All |
| SSIA➣Successful Schools In Action (Seattle, Washington) |
| SSIA➣Stop Speaking in Acronyms |
| SSIA➣Security Seal Industry Association (UK) |
| SSIA➣SnowSports Industries America |
| SSIA➣Signal Strength Indication of the Acknowledge (frames) |
| SSIA➣Single-Stage Implosion Assembled |
| SSIA➣So Sorry in Advance |