This directory lists over 350 organizations found in Arizona, California, Nevada, and Utah whose objectives relate to the social and economic betterment of Native Americans. In addition, many of the organizations are involved in providing or improving Native American education and preserving Native culture. The first section lists national associations, organizations, clearinghouses, and centers based in the four-state region. The remainder of the directory lists organizations by state. Listings include federally recognized tribes and their reservations; non-federally recognized tribes; American Indian centers; state government agencies and organizations; postsecondary institutions and related organizations; elementary and secondary schools and related organizations; media; and museums, monuments, and parks. Each entry includes address, contact person, and a brief description of organizational objectives and services. (LP)