National Association of State Units on Aging (NASUA)
NASUA was founded in 1964 as a national non-profit membership organization comprised of the 57 state and territorial government agencies on aging.
Directory of State and Area Agencies on Aging from AoA

State Unit on Aging Nutritionist Network (SUANN)
The mission of SUANN is to provide a framework for networking, sharing best practices, providing continuing education opportunities, and advocating for the health and well being of older adults. SUANN membership is limited to Nutritionists and/or Nutrition Program Administrators employed by a State Unit on Aging. A webpage is available to SUANN members from the Center's website.
Directory of SUA and AoA Nutritionists/Administrators

National Association of Area Agencies on Aging (N4A)
N4A is the umbrella organization for the 655 area agencies on aging (AAAs) and more than 230 Title VI Native American aging programs in the U.S. Through its presence in Washington, D.C., N4A advocates on behalf of the local aging agencies to ensure that needed resources and support services are available to older Americans. The fundamental mission of the AAAs and Title VI programs is to provide services that make it possible for older individuals to remain in their home, thereby preserving their independence and dignity. These agencies coordinate and support a wide range of home- and community-based services, including information and referral, home-delivered and congregate meals, transportation, employment services, senior centers, adult day care and a long-term care ombudsman program.

Meals on Wheels Association of America (MOWAA)
MOWAA represents those who provide congregate and home-delivered meals services to people in need. Most members are executive directors, Registered or Licensed Dietitians, volunteer coordinators, or nutrition directors at Meals On Wheels and congregate programs. Membership in MOWAA is diverse and also includes AIDS nutrition programs, soup kitchens, Area Agencies on Aging and State Units on Aging. MOWAA works in partnership with many for-profit companies to provide products and/or services to MOWAA members at a reduced rate.

National Association of Nutrition and Aging Services Programs (NANASP)
NANASP is a professional membership organization with members drawn primarily from persons working in or interested in the field of aging, community-based services, and nutrition and the elderly. Founded in the 1970s, NANASP is one of the leadership organizations in that it helps shape national policy, trains service providers, and advocates on behalf of older adults.