Here is a list of intercountry adoptee led groups who include adoptees of any country of origin, based in receiving (adoptive) countries:
Canada has English language based: Asian Adoptees Canada, Transracial Adoptee Community of BC (TAC, in British Columbia), Adult Adoptee Network is a meet up group (for all adoptees) based in Ontario, Subtle Asian Adoptee Traits (SAAT Canada).
Other organisations based in Canada run by intercountry adoptees who have a special focus:
Colours of Adoption is a Montreal book project founded to bring together an intercountry adoption anthology in French.
Out of the Fog is a podcast co-created by Ethiopian adoptee.
Adoptees On is a podcast and source of many adoption support resources by domestic adoptee.
A special focus group for Truth & Reconciliation about intercountry adoption in Europe is United European Adoptees (UEA), Subtle Asian Adoptee Traits (SAAT) Europe, Critical Adoptees Front Europe (CAFE).
Finland has Vuxna Internationellt Adopterade i Finland (VIA)
Germany has Adoptierte aus aller Welt
Spain has La voz de los adoptados
USA has Adopteen (for teenagers), Adoptees of Chicago, Adoption Museum Project, Subtle Asian Adoptee Traits, I Am Adoptee, Transracial Eyes, International-Adopt-Talk, Transracial Adoption, The Adoptee Group, Adoptees who cut ties, Unite Our Dream, Network of Politicized Adoptees, People for Ethical Adoption Reform (PEAR), Yeondae. An all adoptee support group run by intercountry adoptees are San Francisco Bay Area; Dear Adoption provides a platform for all adoptee stories and is created by an intercountry adoptee.
Other organisations based in the USA led by intercountry adoptees, who have a special focus:
Adoptee Advocacy for Citizenship and Equality in the USA
Adoptee Rights Campaign (ARC) works to bring about legislative change for the estimated 35,000 intercountry adoptees, who currently have no US citizenship.
Global focus group led by intercountry adoptee: AQA (Asian, African, Aborigine/Autochtones Queer Adoptees)