Aromatherapy Consortium
- Resources for finding an aromatherapist in the UK, education and standards, news, and a description of the organization's structure.
- http://www.aromatherapy-regulation.org.uk/

International Federation of Aromatherapists
- Worldwide organization located in London, offering workshops, articles, and a magazine. Provides information about activities, membership, news, and training.
- http://www.ifaroma.org

Canadian Federation of Aromatherapists
- International organization that offers standards for certification, safety, and professional conduct for its members. Provides information about membership, education, policies, events, and insurance.
- http://www.cfacanada.com/

Aromatherapy Alliance
- A not-for-profit organization that hosts meetings and educational events for its members. Provides links, and information about membership, events, and education.
- http://www.aromatherapyalliance.org

International Aromatherapists and Tutors Association
- Describes the organization's position in promoting the responsible use of aromatherapy products, based on appropriate research.
- http://www.aroma-iata.com/

Aromatherapy Registration Council
- Information on the National Examination in Aromatherapy, available through the ARC. Includes frequently asked questions, how to apply, what's new and contact information.
- http://www.aromatherapycouncil.org/

Aromatic Plant Project
- An organization supporting the growth and distillation of essential oil plants in the US. Provides a description of member benefits, a calendar of events, articles and news, and a bookstore.
- http://www.aromaticplantproject.com/

International Federation of Aromatherapists (IFA) Australian Branch
- Provides information about membership, Simply Essential magazine, accredited schools, and upcoming events and tours.
- http://www.ifa.org.au

The National Association for Holistic Aromatherapy
- A non-profit educational organization devoted to aromatherapy in the United States. Provides information on essential oils for health and healing purposes.
- http://www.naha.org/

International Fragrance Association
- Guidelines for safe usage of fragrant chemicals and essential oils in perfumes and skincare.
- http://www.ifraorg.org/