MBTI Certification Program
- Official site. Ethics, standards and list of providers.
- http://www.mbticertification.org/

Otto Kroeger Associates
- Offers MBTI workshops and training seminars.
- http://www.typetalk.com/

GS Consultants
- Offers qualifying training and application workshops on the MBTI and the Strong Interest Inventory.
- http://www.gsconsultants.net/

Zeisset Associates
- Provides qualifying workshops and training for certification for the Myers-Briggs Type Indicator in business, education, and religious settings.
- http://home.earthlink.net/~zeisset/associates/

Dianne Englot
- Provides training in using Myers-Briggs in business, career or personal life.
- http://www.dianneenglot.com/

Temperament Research Institute (TRI)
- Provides MBTI qualifying programs for professionals.
- http://www.tri-network.com/

Type Resources
- Provides training necessary to become a qualified and certified in MBTI testing and assessment.
- http://www.type-resources.com/

Institute for Type Development
- Provides MBTI accrediation programmes and seminars in Australia.
- http://www.itd.net.au/