National or regional centers and professional, industrial, academic, and other non-governmental organizations specifically involved with developing, using, and/or promoting non-animal alternative methods for toxicity testing.
United States
Center for Alternatives to Animal Testing (CAAT), Johns Hopkins University
Center for Animal Alternatives Information, University of California, Davis, (UC Davis)
In Vitro Specialty Section (IVSS), a specialty group within the Society of Toxicology
Institute for In Vitro Sciences (IIVS)
Interagency Coordinating Committee on the Validation of Alternative Methods/ NTP Interagency Center for the Evaluation of Alternative Toxicological Methods (ICCVAM/NICEATM)
International QSAR Foundation
Society for In Vitro Biology (SIVB)
Society of Toxicology (SOT)
European Union
3R Research Foundation (Switzerland)
Belgian Platform for Alternative Methods to Animal Testing (BPAM)
Biograf 3R: computational Alternatives to animal testing
The Boyd Group (UK)
Centre for Alternative and Complementary Methods to Animal Testing (ZET), Austria
Centre for Documentation and Evaluation of Alternatives to Animal Experiments (ZEBET), Federal Institute for Risk Assessment (BfR), Germany
Dutch-Belgian Society for In Vitro Methods (INVITROM)
European Centre for the Validation of Alternative Methods (ECVAM)
European Consensus Platform for Alternatives (ECOPA): includes 15 national platforms as full members and 1 associated platform†
European Partnership for Alternative Approaches to Animal Testing (EPAA)
European Society for Animal Cell Technology (ESACT)
European Society of Toxicology In Vitro (ESTIV)
EUROTOX: Federation of European Toxicologists & European Societies of Toxicology
Fund for the Replacement of Animals in Medical Experiments (FRAME)
Hepatocyte Users Group (HUG)
In Vitro Testing Industrial Platform (IVTIP)
In Vitro Toxicology Society (IVTS): affiliated with the British Toxicology Society
In Vitro Toxicology & Tissue Engineering Laboratory (Poland)
Italian Association for Toxicology In Vitro (CELLTOX)
Middle European Society for Alternative Methods to Animal Testing (MEGAT)
National Centre for the Replacement, Refinement and Reduction of Animals in Research (NC3Rs)
Netherlands Centre for Alternatives to Animal Use (NCA)
Nordic Information Centre for Alternative Methods (NICA)
Scandinavian Society of Cell Toxicology (SSCT)
SET Foundation (Germany)
Spanish Group on Alternative Methods (GTEMA) (Spain)
Spanish Network for the Development of Alternative Methods (REMA)
Tissue and Cell Engineering Society (TCES)
Tissue Engineering and Regenerative Medicine International Society, European Chapter (TERMIS-EU)
Other Regions
Canadian Council on Animal Care (CCAC) 
International Centre for Alternatives in Research and Education (I-CARE) (India)
International Council on Animal Protection in OECD Programmes (ICAPO)
Japanese Association for Animal Cell Technology (JAACT)
Japanese Center for the Validation of Alternative Methods (JaCVAM)
Japanese Society of Alternatives to Animal Experiments (JSAAE)
Korean Society for Alternative to Animal Experiments (KSAAE)