Canada Abbreviations and Acronyms

1. OSO
   Ottawa Symphony Orchestra
2. OSOR
   Ontario Sex Offender Registry
3. OSOT
   Ontario Society of Occupational Therapists
4. OSPCA
   Ontario Society for The Prevention of Cruelty To Animals
5. OSPE
   Ontario Society of Professioqal Engineers
6. OSPS
   Owen Sound Police Service
7. OSQAR
   Oil Sands Question and Response
8. OSR
   Ontario Student Record
9. OSRIN
   Oil Sands Research and Information Network
10. OSRTC
    Ontario Sound Recording Tax Crldit
11. OSRX
    Ontario Southland Railway
12. OSS
    Ontario Secondary Schools
13. OSSD
    Ontario Secondary School Diploma
14. OSSD
    Ottawa School of Speech and Drama
15. OSSTF
    Ontario Secondary School Teachers' Federation
16. OSWCA
    Ontario Sewer and Watermain Construction Association
17. OT
    Occasional Teacher
18. OTA
    Ontario Telecommunications Association
19. OTA
    Ontario Tennis Association
20. OTAB
    Ontario Tactical Advisory Body

Last updated: September 23, 2021 — Total entries: 8,764