There are a number of world organisations that offer adaptive/special ability judo. listed below is a selection of such organisations starting with our World Adaptive Judo

World Adaptive Judo is dedicated to the promotion and development of all forms and levels of adaptive/special ability judo across the world. Adaptive judo is specifically developed to encourage physical activity, inclusion, competitiveness and wellbeing to the wider judo community who live with a complex range of abilities and disabilities.
World Adaptive Judo advocates and promotes judo for people of all disabilities including but not limited to Intellectual, physical, social disabilities and sensory impairments.

Special Olympics is a global movement of people creating a new world of inclusion and community, where every single person is accepted and welcomed, regardless of ability or disability. We are helping to make the world a better, healthier and more joyful place—one athlete, one volunteer, one family member at a time.
Judo Page https://www.specialolympics.org/our-work/sports/judo?locale=en
Judo Coaching Guide 2021. https://read.nxtbook.com/special_olympics/guide_books/judo_coaching_guide_2021/judo_acknowledgements.html

Virtus is the global organisation that governs – advocates – organises – promotes elite sport for athletes with an intellectual impairment.

Ifon is an international federation of independent national ID-judo associations and legal guardians of people with an intellectual disability.

SU-DS promotes sport worldwide for athletes with Down sydrome to the highest levels of sporting excellence.

Judown is a federation of SUDS which promotes Judo for judoka with Down syndrome.