The Multiple-Use Sustained-Yield Act of 1960 (or MUSYA) (Public Law 86-517) is a federal law passed by the United States Congress on June 12, 1960.

This law authorizes and directs the Secretary of Agriculture to develop and administer the renewable resources of timber, range, water, recreation and wildlife on the national forests for multiple use and sustained yield of the products and services.

[1] By the 1950s, the national forests no longer held enough resources to meet the growing needs of an increasing population and expanding economy.

Now, for the first time the agency had a specific congressional directive which stipulated that timber sales were not in all cases to be the limiting factor.

[2] MUSYA defines the terms "multiple use" and "sustained yield" as follows: The 1960 law was amended by the Omnibus Parks and Public Lands Management Act of 1996.