| Abbreviation | Definition |
|---|---|
| SIV | Smart Intuitive Vehicle |
| SIV | Special Investment Vehicle |
| SIVA | Surninam International Victory Airline |
| SJC | San Jose International Airport |
| SJH | San Jose Harley-Davidson |
| SJTA | South Jersey Transportation Authority |
| SJU | Luis Munoz Marin International Airport |
| SKW | Skyway |
| SL | Same Lane |
| SL | Spoiler Lover |
| SL | Sport Leicht |
| SL | Sport Luxury |
| SL | Steam Locomotive |
| SL | Storstockholms Lokaltrafik |
| SL | Superstar Limo |
| SLA | Sealed Lead Acid |
| SLAC | Shipper’s Load And Count |
| SLAC | Shippers Load And Count |
| SLC | Salt Lake City International Airport |
| SLC | Sport Luxury Coupe |