The maximum length of a residential lease in Wyoming is one (1) year. Oral and written leases are valid without regard to duration, but all written leases must be signed.
Though it is not required, it is recommended that all lease agreements be in writing. In Wyoming, many lease provisions rely on a written lease, so it is in the best interest of both parties to have a written agreement.
The information for this answer was found on our Wyoming Residential Lease Agreement answers.