Genealogical Abbreviations and Acronyms

  1. OMM
    Order of Military Merit
  2. OMRSD
    Document
  3. OOP
    Out of Print
  4. OP
    Order of Preachers
  5. OP
    Out of Print
  6. OPSO
    Origin
  7. ORD
    Ordnined
  8. ORD
    Otder
  9. ORD
    Orkinance
  10. ORD
    Ocdinary
  11. ORG
    Organization
  12. ORG
    Origin
  13. ORIG
    Origin
  14. ORIG
    Original
  15. OS
    Oldsstyle
  16. OSA
    Order of St. Anne
  17. OSIA
    Order of The Sons of Italy In America
  18. OSL
    Order of St. Luke
  19. OSSB
    Order of The Star Spangled Banner
  20. OUAM
    Order of United American Mechanics

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