APSB
| Acronym | Definition |
|---|---|
| APSB | Automatic Protection Switching Byte |
| APSB | Ascension Parish School Board (Donaldsonville, LA) |
| APSB | Australian Pony Stud Book (est. 1931) |
| APSB | All-Primary/Some-Backup (ANSI) |
| APSB | Apple Peel Small Bowel Syndrome |
| APSB | Automatic Protection Switching Byte defect (Telabs) |
| APSB | Asia Pacific Strategy Board (General Motors) |