| Acronym | Definition |
|---|
| SMSO➣Smart Metering System Operator (software) |
| SMSO➣Senior Maintenance Staff Officer |
| SMSO➣Stowarzyszenie Mlodego Spoleczenstwa Obywatelskiego |
| SMSO➣Saudi Medical Site Online |
| SMSO➣Sekolah Menengah Sayyidina Othman (secondary school, Tutong, Brunei) |
| SMSO➣Sequential Multipliers with Serial Output |
| SMSO➣Security Management System Online (Wateringen, Netherlands) |
| SMSO➣State Military Support Office |