Zane Grey Trout Unlimited (ZGTU) is a non-profit organization established to protect, enhance and restore coldwater fishing resources in Arizona. Established in 1985, ZGTU was named in honor of Zane Grey honoring the renowned author who resided in Arizona during part of his life. He wrote prolifically on the variety of fishing and the outdoors he enjoyed.

ZGTU’s mission is to conserve, protect and restore Arizona’s trout fisheries and their watersheds. ZGTU accomplishes this mission through the efforts of dedicated volunteers on local and state levels, along with other TU chapters and conservation organizations.