Oklahoma Statute §12-1637 provides:
After May 19, 1953, no natural person in this state may change his or her name except as provided in Sections 1631 through 1635 of this title and Section 90.4 of Title 10 of the Oklahoma Statutes and Section 1-321 of Title 63 of the Oklahoma Statutes, other than by marriage, as prescribed in Sections 5, 6, and 8 of Title 43 of the Oklahoma Statutes, or by decree of divorce, as prescribed in Section 121 of Title 43 of the Oklahoma Statutes, or by adoption, as prescribed in Section 7505-3.1 of Title 10 of the Oklahoma Statutes.

Sneed v. Sneed, 585 P. 2d 1363 - Okla: Supreme Court 1978 states:
Under the common law, any adult or emancipated person could change his or her name at will, without any legal proceedings, by simply adopting another name. This right was generally conditioned only on the absence of illegal or fraudulent purpose.[4] The Oklahoma Change of Name Act is now the exclusive method for change of name except by marriage, decree of divorce or by adoption,[5] and codifies the common law condition that the name not be changed for any illegal or fraudulent purpose

Keltch v. Alfalfa County Election Bd., 737 P. 2d 908 - Okla: Supreme Court 1987 states:
In the absence of illegal or fraudulent purposes, the common law freely permitted name changes, and even though the Change of Name Act, 12 OS 1981 §§ 1631-1640, is now the exclusive method for changes of name not arising from marriage, divorce, or adoption, it incorporates the common law antecedents

See also 81. Kushner, supra note 20, at 328–29 n.79 (noting that Hawaii, Louisiana, Maine, and Oklahoma have abrogated the common law name)

Oklahoma's Change of Name Act abrogated and codified the common law and is now the *exclusive* method for changing one’s name, therefore the common law method does not survive in Oklahoma.