| Name | Affiliation | Occupation / Position Title | City | Country | State | |
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| Pascal-Claes, Francis | Community Mental Health Center 'Waas & Dender' | Clinical Psychologist-psychotherapist | Sint Niklaas | Belgium | | View |
| McCracken, Lance | Uppsala University | Professor of Clinical Psychology | Uppsala | Sweden | | View |
| Miselli, Giovanni | Fonazione Istituto Ospedaliero Fondazione Sospiro (Cremona), ACT-Italia; IESCUM | PhD, Clinical Psychologist and Psychotherapist PEER REVIEWED ACT TRAINER | Cremona | Italy | | View |
| A-Tjak, Jacqueline | Skils | Klinisch Psychologe | Emmen | Netherlands | | View |
| Sawyer, Mary | Mary Sawyer One to One Counselling | Principal Psychologist | | | | View |
| Gloster, Andrew | University of Lucerne | Clinical Psychologist/ Professor | Lucerne | Switzerland | | View |
| Morris, Eric | La Trobe University | Senior Lecturer | | | | View |
| Vahey, Nigel | Technological University Dublin | Lecturer in Psychology | Dublin | Ireland | | View |
| Lydell, Tommy | Scandinavian Institute for Evidence Based Psychology AB, Capio AB, Evimind AB | Licensed psychotherapist, Licensed healthcare counselor | Stockholm | Sweden | | View |
| Gillanders, David | University of Edinburgh | Senior Lecturer in Clinical Psychology | Edinburgh | United Kingdom | | View |
| Lloyd, Joda | Department of Professional Psychology | Head of Department | London | United Kingdom | | View |
| Gaynor, Scott | Western Michigan University | Psychologist/Professor/Co-DCT | | United States | | View |
| McHugh, Louise | University College Dublin | Professor | Dublin | Ireland | | View |
| Soo, Lai | BABCP (UK) | Cognitive Behavioural Psychotherapist | London | United Kingdom | | View |
| Bruyninx, Lieve | Factor Psy | psychotherapist/trainer/owner | Geleen | Netherlands | | View |
| Juárez, Patricia | University of Texas at El Paso - Universidad Autonoma de Ciudad Juarez | Training Director | El Paso / Cd. Juarez | Mexico | | View |
| Gronblad, Lisa | Private Psychology Practice | Psychologist/psychotherapist | STOCKHOLM | Sweden | | View |
| Kumano, Hiroaki | Waseda University | Professor of Clinical Psychology | Tokorozawa | Japan | | View |
| Kocovski, Nancy | Department of Psychology, Wilfrid Laurier University | Professor | | | | View |
| Colon-Torres, Yari | VA Caribbean Healthcare System | Staff Psychologist | San Juan | Puerto Rico | | View |
| Kjelgaard, Rikke | www.rikkekjelgaard.com | Psychologist, author, peer reviewed ACT trainer, chief rock'n'roller | Svedala | Sweden | | View |
| DuFrene, Troy | CSPP-SF | BCBA / Psychological Associate | | | | View |
| Handelman, Rob | Union Square Act Center, NYC | Clinical Psychologist | | United States | | View |
| McConnell, Chris | APCP | Psychotherapist / Counsellor | Dublin | Ireland | | View |
| Hulbert-Williams, Lee | University of Chester | Associate Professor | Chester | United Kingdom | | View |
| Bordieri, Michael | Murray State University | Associate Professor | | | | View |
| Callaghan, Glenn | San Jose State University | Professor of Psychology | | | | View |
| Oliver, Joe | Contextual Consulting/ University College London | Consultant Clinical Psychologist | London | United Kingdom | | View |
| Robinson, Peter | Possibilities | Psychotherapist | Edinburgh | United Kingdom | | View |
| Owen, Ray | Dr Ray Owen, Psychology Services | Consultant Clinical Psychologist (Cancer & Palliative Care / Health Psychology) | | United Kingdom | | View |
| Gibbons, Tom | Transitions | Therapist | Hamilton | Bermuda | | View |
| Halberstadt, Naftali | Freelancer: therapy, supervision, teaching, clinical research, program development | Psychologist Ph.D. | Jerusalem | Israel | | View |
| Moghaddam, Nima | University of Lincoln | Research Clinical Psychologist | | | | View |
| Waadt, Michael | Privatpraxis für Psychotherapie und Strategisches Coaching | Psychotherapeut (HPG) | Munich | Germany | | View |
| Dorey, Lucy | University of Southampton & Evolve Training and Therapy | Researcher, Counsellor, ACT Therapist and Supervisor | Southampton | United Kingdom | | View |
| Krnetic, Igor | Center for Cognitive Behavior Therapy | Director | Banja Luka | Bosnia and Herzegovina | | View |
| Kendra, Kathleen | Miriam Hospital | Clinical Psychologist | | | | View |
| Schraml, Karin | Stockholm University | Clinical psychologist, PhD | Vienna | Austria | | View |
| Thompson, Brian | Portland Psychotherapy Clinic, Research, & Training Center | Licensed Psychologist | | | | View |
| Corthouts, Joris | psychiatric institution St Hiëronymus | psychologist | sint niklaas | Belgium | | View |
| Leonard-Curtin, Aisling | ACT Now Purposeful Living | Counselling Psychologist | Wexford | Ireland | | View |
| Perez-Pedrogo, Coralee | Albizu University & University of Puerto Rico | Clinical Psychologist | San Juan | Puerto Rico | | View |
| Matthijssen, Denise | Pivate practice | familytherapist and coach | Ingen | Netherlands | | View |
| Cankaya Sahin, Banu | glasgow university | Visiting Researcher | Glasgow | United Kingdom | | View |
| Ethington, Lanaya | Thrive Behavioral Health | Psychologist | | | | View |
| Kiel, Valerie | ACT-Akademie.org | Psychologist & Peer-reviewed ACT | Maastricht | Netherlands | | View |
| Gustavson, Norman | PARSA international NGO | clinical psychologist | Kabui | Afghanistan | | View |
| Loutsiou, Anthi | University of Cyprus | Director of Clinical Training | | | | View |
| Karayianni, Eleni | Department of Psychology, University of Cyprus | Clinical Training Coordinator | Nicosia | Cyprus | | View |
| Nikolaou, Patrisia | Centre of prevention and treatment of eating disorders | Clinical psychologist | Nicosia | Cyprus | | View |
| Hankinson, Louise | NHS | Clinical Psychologist | Oxford | United Kingdom | | View |
| Lipovac, Dario | Private Practice "Savjetovanje ACT" | Psychologist, M.A., CBT Therapist | Banja Luka | Bosnia and Herzegovina | | View |
| Jung, Jelena | EXIT festival, Psychological Center Temenos | Psychologist - Psychotherapist | Novi Sad | Serbia | | View |
| Lee, Teck Ming | New Vision Counselling and Consultancy | Senior Counsellor | Singapore | Singapore | | View |
| Klein, Philipp | Lubeck University Medical School | Psychiatrist / Psychotherapist | Luebeck | Germany | | View |
| Lee, Marlene | Solutions 4 Life - Psychological Services | Clinical Psychologist | Singapore | Singapore | | View |
| Khajepoor, Milad | iau roudehen branch | researcher | | Iran, Islamic Republic of | | View |
| Blom, Tania | Nuffield Hospital Bristol | Psychotherapist | Bristol | United Kingdom | | View |
| Barzilay, Dan | psychology service | psychologist | shoham | Israel | | View |
| Ulusoy, Sevinc | Cansagligi Foundation, Center for Contextual Behavioral Science | psychiatrist | Istanbul | Turkey | | View |
| Adrian, Fantini | CIPCO-FUNDACION FORO | psychiatrist | Cordoba | Argentina | | View |
| Sinclair, Michael | City Psychology Group | Consultant Counselling Psychologist / Clinical Director | London | United Kingdom | | View |
| Maleva, Viliyana | Private Practice in Sofia, Bulgaria | Psychotherapist | Sofia | Bulgaria | | View |
| Wong, Chin Meng | AgapeServe.sg | Clinical Psychologist | Singapore | Singapore | | View |
| Rowthorn, Melissa | NZ Psychologist Board | Counselling Psychologist | Auckland | New Zealand | | View |
| Nalbant, Ahmet | Cansagligi Foundation, Center for Contextual Behavioral Science | Psychiatrist | İstanbul | Turkey | | View |
| Barrett, Katie | Health Services Executive Ireland | Clinical Psychologist | Galway | Ireland | | View |
| Sease, Sarah | Widener University | Clinical Psychologist | Dubai | United Arab Emirates | | View |
| Jefferies, Spencer | Widener University | Clinical Psychologist | Dubai | United Arab Emirates | | View |
| Satuli, Johanna | centre hospitalier de le quesnoy | psychologist | le quesnoy | France | | View |
| Fernandez, Zaida | Private Psychology Practice | Psychology Counseling | San Juan | Puerto Rico | | View |
| Colodro Sola, Helena | Inspira Psicología | Clinical psychologist | London | United Kingdom | | View |
| Keinonen, Katariina | University of Jyväskylä | Senior Lecturer in Clinical Psychology | Jyväskylä | Finland | | View |
| Di Gangi Herms, Alida | Azienda Sanitaria dell'Alto Adige - Ospedale Comprensoriale di Bressanone -Servizio Psicologico | Psicologa Psicoterapeuta | Bressanone | Italy | | View |
| 曹(Tsao), 國璽(Kuo Hsi) | ReAnKos Counseling Center | counselor | Taipei City | Taiwan | | View |
| Patten, Emma | Luton and Dunstable Hospital | Clinical Psychologist | | United Kingdom | | View |
| Bourgault, Rosemarie | EABCT, , ACBS | Clinical Psychologist/Psychotherapist | Paris | France | | View |
| McDowell, Heather | auckland district health board | Consultant Clinical Psychologist | Auckland | New Zealand | | View |
| Garcia Asensio, M. J. | Sensio Psychologiepraktijk | Drs. | Amsterdam | Netherlands | | View |
| Bohnacker, Vincent | Psychotherapie Wilmersdorf | Psychotherapist | Berlin | Germany | | View |
| Jurado, Michelle | University of Puerto Rico, Rio Piedras Campus | Clinical Psychologist / Psychologist II | San Juan | Puerto Rico | | View |
| Lopez, Francisca | Universidad de Almería | Professor | Almeria | Spain | | View |
| Lampronti, Sara | ascco | student | Ferrara | Italy | | View |
| Bowman, Alan | Teesside University/South Tees Hospitals NHS Foundation Trust | Clinical Psychologist/Academic Tutor | Middlesbrough | United Kingdom | | View |
| Sabucedo, Pablo | University of Liverpool | Chartered Clinical Psychologist | Liverpool | United Kingdom | | View |
| Nisbet, Tom | National Health Service (NHS) | Clinical Psychologist | Cupar | United Kingdom | | View |
| Gotthelf, Karen | Pathways Limited | Psychologist Consultant | | Hong Kong | | View |
| Hooper, Nic | Cardiff University | Lecturer | | United Kingdom | | View |
| Jumroonrojana, Karn | Mahidol University | Doctor | Bangkok | Thailand | | View |
| Shepherd, Laura | Nottingham University Hospitals NHS Trust | Clinical Psychologist | | United Kingdom | | View |
| Lee, KangUk | Kangwon National University Hospital | professor | 강남구 | Korea, Republic of | | View |
| Mandil, Javier | Fundación ETCI | Director | Buenos Aires | Argentina | | View |
| Chao, Puihan Joyce | Dimensions Center | Clinical Psychologist | Hong Kong | Hong Kong | | View |
| Fernandez Mateos, Jose | ABA international | BCBA , ACT and mindfulness therapist | | Ireland | | View |
| Sim, Rachael | NZPsS | Clinical Psychologist | | New Zealand | | View |
| PRESLES, Philippe | Presles | Docteur | Marseille | France | | View |
| Coates, Richard | British Psychological Society/HCPC | Consultant Clinical Neuropsychologist | Reading | United Kingdom | | View |
| Bilgen, Ibrahim | Bilgen Terapi Enstitüsü | Psychiatrist /Psychotherapist | Istanbul | Turkey | | View |
| Fibiger, Henrik | Psykolog Henrik Fibiger | Privatpraktiserende Psykolog | Brovst | Denmark | | View |
| Hussein, Hanan | nhs [uk] | Clinical Psychologist | | United Kingdom | | View |