R.S.O. - Revised Statutes of Ontario Jurisdiction: Canada Related Citation: S.O. (CAN), ONCA Sample citation: Interpretation Act, R.S.O. 1990, c. I.11 REFERENCES: Guide to Legal Citations R.S.O. on CanLII Service Ontario e-Laws (official website) 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!