Wyo. Stat. § 20-2-204 (2026)

(a) Either parent may petition to enforce or modify any
court order regarding custody and visitation.

     (b) A court having jurisdiction under W.S. 20-2-203 may,
upon appropriate motion of a party, require a parent to appear
before the court and show just cause why the parent should not
be held in contempt, upon a showing that the parent has
willfully violated an order concerning the care, custody and
visitation of the children. In order to enforce and require
future compliance with an order the court may find that the
parent is in contempt of court, award attorney's fees, costs and
any other relief as the court may deem necessary under the
circumstances to the party aggrieved by the violation of an
order.

     (c) A court having jurisdiction may modify an order
concerning the care, custody and visitation of the children if
there is a showing by either parent of a material change in
circumstances since the entry of the order in question and that
the modification would be in the best interests of the children
pursuant to W.S. 20-2-201(a). In any proceeding in which a
parent seeks to modify an order concerning child custody or
visitation, proof of repeated, unreasonable failure by the
custodial parent to allow visitation to the other parent in
violation of an order may be considered as evidence of a
material change of circumstances. Any modification under this
subsection shall be subject to the limitations and requirements
of W.S. 20-2-205.