SO - Southern Reporter (So. USA) and Statutes of Ontario (S.O. CAN) Jurisdiction: Canada, United States See: So. (USA) for Southern Reporter, United States See: S.O. (CAN) for Statutes of Ontario, Canada Frequently need citation information? Try our search provider (works in most modern browsers) If you find an error, omission or if have a suggestion for a law report, legal periodical or abbreviation, we'd love to get your input!