Wyo. Stat. § 35-5-218: Law governing validity; choice of law as to execution of document of gift; presumption of validity.

(a) A document of gift is valid if executed in accordance with:

(i) This act;

(ii) The laws of the state or country where it was executed; or

(iii) The laws of the state or country where the person making the anatomical gift was domiciled, has a place of residence or was a national at the time the document of gift was executed.

(b) If a document of gift is valid under this section, the law of this state governs the interpretation of the document of gift.

(c) A person may presume that a document of gift or amendment of an anatomical gift is valid unless that person knows that it was not validly executed or was revoked.