Wyo. Stat. § 33-48-113: Referees.

No person shall act as a referee to a mixed martial arts or boxing match without a certificate granted by the commission. The commission is authorized to grant certificates to competent referees upon the application and the payment of an annual fee as established by the commission in accordance with W.S. 33-1-201 and the commission may revoke any certificate granted to any referee for cause as the commission may deem sufficient.