American Chiropractic Association > Join

onebody June 2021

The American Chiropractic Association (ACA), the largest professional chiropractic organization in the United States, represents the most principled and accomplished chiropractors, who understand that it takes more to be called an ACA chiropractor.

We are leading our profession in the most constructive and far-reaching ways -- by working hand in hand with other healthcare professionals, by lobbying for pro-chiropractic legislation and policies, by supporting meaningful research and by using that research to inform our treatment practices. We also provide professional and educational opportunities and are committed to being a positive and unifying force for the practice of modern chiropractic.

Choose a membership type below or download and e-mail, mail or fax in your membership application.


If you are an international doctor of chiropractic, recent graduate, chiropractic assistant or if you are not a doctor of chiropractic, please join online at this link.

If you are unsure which membership category to choose, please reach out to us at or call (703) 276-8800

Corporate Membership Opportunities

Membership Qualifications

Unless otherwise excepted, applicants for ACA membership must be graduates of a course of four (4) academic years at a chiropractic college having status with an accrediting agency recognized by the U.S. Department of Education, or an agency having a reciprocal agreement with the recognized agency.  Students may be granted limited ACA membership by way of membership in the college SACA chapter. Unless otherwise excepted, applicants must be licensed to practice chiropractic.  Applicants must adhere to the ACA Code of Ethics.