Okla. Stat. tit. 59, § 396.33
Disposing of the body of a deceased person by cremation, dehydration, combustion or other similar means, within the State of Oklahoma, except in a crematory duly licensed as provided for in Section 1-331 of this title and under a special permit for cremation issued in accordance with the provisions of Section 1-329.1 of this title, is hereby declared to be a felony.
Laws 1963, c. 325, art. 3, § 333; Amended by Laws 1997, c. 133, § 521, Effective Date Amended to July 1, 1999 by Laws 1998, c. 2 (First Extraordinary Session), §§ 23-26, effective June 19, 1998 (superseded document available).