| 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) |