| Abbrev. |
Meaning |
| OA |
Office of Administration |
| OASDI |
Old-Age, Survivors and Disability Insurance Benefits |
| OAS |
Organization of American States |
| O.C.D. |
Ohio Circuit Decisions |
| OFCC |
Office of Federal Contract Compliance |
| Off.Gaz. |
Official Gazette, U.S. Patent Office |
| OFPP |
Office of Federal Procurement Policy |
| OFR |
Office of Federal Register |
| Ohio |
Ohio Reports |
| Ohio App. |
Ohio Appellate Reports |
| Ohio App.2d |
Ohio Appellate Reports, Second Series |
| Ohio App.3d |
Ohio Appellate Reports, Third Edition |
| Ohio Cir.Ct.R. |
Ohio Circuit Court Reports |
| Ohio Cir.Ct.R., N.S. |
Ohio Circuit Court Reports, New Series |
| Ohio Cir.Dec. |
Ohio Circuit Decisions |
| Ohio Dec. |
Ohio Decisions |
| Ohio Dec.Reprint |
Ohio Decisions, Reprint |
| Ohio F.Dec. |
Ohio Federal Decisions |
| Ohio Law |
Ohio Lawyer |
| Ohio Law Bul. |
Ohio Law Bulletin |
| Ohio Law J. |
Ohio Law Journal |
| Ohio Law Rep. |
Ohio Law Reporter |
| Ohio Leg.N. |
Ohio Legal News |
| Ohio N.U.L.Rev. |
Ohio Northern University Law Review |
| Ohio N.P. |
Ohio Nisi Prius |
| Ohio N.P., N.S. |
Ohio Nisi Prius, New Series |
| Ohio O. |
Ohio Opinions |
| Ohio O.2d |
Ohio Opinions, Second Series |
| Ohio Prob. |
Ohio Probate |
| Ohio Rev.Code Ann. |
Ohio Revised Code Annotated |
| Ohio S. & C.P.Dec. |
Ohio Superior and Common Pleas Decisions |
| Ohio St. |
Ohio State Reports |
| Ohio St.2d |
Ohio State Reports, Second Series |
| Ohio St.3d |
Ohio State Reports, Third Series |
| Ohio St.L.J. |
Ohio State Law Journal |
| Ohio Supp. |
Ohio Supplement |
| Oil & Gas Tax Q. |
Oil & Gas Tax Quarterly |
| Okla. |
Oklahoma Reports |
| Okla.App. |
Oklahoma Court of Appeals |
| Okla.B.J. |
Oklahoma Bar Journal |
| Okla.Cr. |
Oklahoma Court of Criminal Appeals |
| Okla.Cty.U.L.Rev. |
Oklahoma City University Law Review |
| Okla.Crim. |
Oklahoma Criminal Reports |
| Okla.L.J. |
Oklahoma Law Journal |
| Okla.L.Rev. |
Oklahoma Law Review |
| Okla.St.Ann. |
Oklahoma Statutes Annotated |
| OLMS |
Office of Labor-Management Standards |
| OMB |
Office of Management and Budget |
| O.O. |
Ohio Opinions |
| Op.Atty.Gen. |
Opinions of the Attorney General |
| OPM |
Office of Personnel Management |
| Or. |
Oregon Reports |
| Or.App. |
Oregon Reports, Court of Appeals |
| Or.Bar Bull. |
Oregon Bar Bulletin |
| ORC |
Ohio Revised Code |
| Ord. |
Ordinance |
| Orleans App. |
Orleans Appeals, La. |
| Or.L.Rev. |
Oregon Law Review |
| Or.Rev.Stat. |
Oregon Revised Statutes |
| Or.Tax |
Oregon Tax Reports |
| O.S. |
Oklahoma Statutes; Old Series |
| OSHA |
Occupational Safety and Health Administration |
| OSHRC |
Occupational Safety and Health Review Commission |
| OT |
Office of Transportation |
| OTC |
Over the counter |
| OTS |
Office of Thrift Supervision |