Yes, a Wyoming landlord may enter a tenant’s unit without permission because this state does not maintain any entry standards in its landlord-tenant laws. Tenants in Wyoming who wish to require permission before allowing entry to their landlords must request an entry policy be added to their lease agreement. This kind of policy should always include a set amount of hours of advance notice needed for entry, as well as the several reasons why a landlord may reasonably request entry.
The information for this answer was found on our Wyoming Landlord Tenant Rights answers.