| Name | Affiliation | Occupation / Position Title | City | Country | State | |
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| Suchanek, Piotr | Act Odwagi | Psychologist / Coach / Mindfulness Teacher | Cracow | Poland | małopolskie | View |
| Sudakova, Ekaterina | Private Practice | Therapist | Aarhus | Denmark | | View |
| Sugnet, Tom | Insula Rehabilitation Hospital | Head of Acute Psychiatry Ward | Rab | Croatia | Primorsko-goranska zupanija | View |
| Suhaimi, Aida | Camali Clinic | Clinical Psychologist | DUBAI | United Arab Emirates | | View |
| Sulbaran, Jhonnathan | Universidad Catolica Andres Bello | Instructor Professor | Caracas | Venezuela | Distrito Federal | View |
| Sullivan-Singh, Sarah | The Seattle Clinic & The University of Washington | Psychologist | Seattle | United States | Washington | View |
| Sullivan, Carrie | Carrie Sullivan, MA, BCBA | Behavior Consultant | Elk Grove | United States | California | View |
| Sullivan, Michael | Michael Sullivan Counseling | Therapist | Norfolk | United States | Nebraska | View |
| Sumka, Angel | BCACC | Registered clinical counsellor | Taylor | Canada | British Columbia | View |
| Summers, Camille | Third Wave ABA | /Founder/Clinical Director/BCBA | Soquel | United States | California | View |
| Suozzi, Paola | consultorio privado | Psicologa | Ingeniero Maschwitz | Argentina | Buenos Aires | View |
| Sussman, Rain | LCSW Private Practice | LCSW | Berkeley | United States | California | View |
| Svitak, Sabine | psychotherapie-praxis-bamberg | Psycholog. Psychotherapeutin | Bamberg | Germany | Bayern | View |
| Swadling, Michael | RMIT University | Clinical Psychologist/Senior Advisor, Mental Wellbeing Initiatives | Melbourne | Australia | Victoria | View |
| Swain, Sukalyani | Self -employed | Counsellor | Singapore | Singapore | | View |
| Sydor, Sean | Sean S. Sydor Counselling, Consulting and Psychotherapy | Psychotherapist | Burlington | Canada | Ontario | View |
| Sylvain, Veronique | OPQ Ordre des psychologues du Québec | Psychologist | Montreal | Canada | Quebec | View |
| Szabo, Thomas | Capella University | Assistant Professor / Hybrid Program Site Director | Las Vegas | United States | Nevada | View |
| Szirmak, Zsofia | Private Praxis | Psychotherapist | Berlin | Germany | Berlin | View |
| Szlezak, Adam | Team Dr ADAM | Doctor of Physiotherapy & Accredited Sports Scientist (focussed in Mental & Behavioural Health & Performance) | Gold Coast | Australia | Queensland | View |
| Szücs, Attila | Psychotherapeutische Praxis, alle Kassen und Privat | Psychotherapist/Psychotherapeut | Bretzfeld | Germany | Baden-Württemberg | View |
| Szwarc, María | AATC | Psychologist | Buenos Aires | Argentina | Capital federal | View |
| Taber-Thomas, Sarah | University at Buffalo | Director, Psychological Services Center | Buffalo | United States | New York | View |
| Taber, Traci | NASP, ABAI | Psychologist | PHOENIX | United States | Arizona | View |
| Tadros, Edward | NELFT | Senior Clinical Psychologist | London | United Kingdom | London | View |
| Taggaard Nielsen, Ole | ACT Klinikken | Psychologist, ACBS Peer Reviewed ACT Trainer | Copenhagen | Denmark | Copenhagen | View |
| Taillefer, Sylvie | Occoq | Guidance Counsellor | Blainville | Canada | Quebec | View |
| Tait, Monja | Monja Tait | Psychologist | Trento | Italy | Trento | View |
| Talkowski, Carolina | ECCO Ramos Mejía | Psychiatrist | Ciudad Autónoma de Buenos Aires | Argentina | Capital federal | View |
| Tan, Ming Gui | Hospital Universiti Malaysia Sabah | Doctor | Brickfields | Malaysia | Wilayah Persekutuan Kuala Lumpur | View |
| Tang, Lisa | Lisa C. Tang, Ph.D. | Licensed Clinical Psychologist | Pleasanton | United States | California | View |
| Tangau, Corine | University Malaysia Sabah | Medical Officer | Kota Kinabalu | Malaysia | Sabah | View |
| Tango, Germano | espacio babel | Psychologist | La Orotava. Tenerife. Canary Islands | Spain | Santa Cruz de Tenerife | View |
| Tani, Shinji | Ritsumeikan University | professor | Osaka | Japan | Osaka | View |
| Tanvir, Bushra | None at present | Psychologist | Nusajaya, Johor | Malaysia | Johor | View |
| Tao, Chun | Mayo Clinic Arizona | Clinical Health Psychologist | Scottsdale | United States | Arizona | View |
| Tapper, Louise | ThriveOT | Occupational therapist | Christchurch | New Zealand | Canterbury | View |
| Tarbox, Jonathan | University of Southern California and FirstSteps for Kids | Program Director, Master of Science in Applied Behavior Analysis | Los Angeles | United States | California | View |
| Tarrant, Ruth | NHS/Private Practice | Oncologist | Southampton | United Kingdom | Hampshire | View |
| Tassara, Marcel | https://www.marceltassara.com/ | Psychologist | Milwaukee | United States | Wisconsin | View |
| Tate, Larissa | Birmingham VA Medical Center | Clinical Psychologist | Birmingham | United States | Alabama | View |
| Tatta, Joe | Integrative Pain Science Institute | Physical Therapist | New York | United States | New York | View |
| Tayer, Wendy | UCSD | Psychologist/Faculty Member | La Jolla | United States | California | View |
| Taylor, Emma | Willow Psychology | Clinical Psychologist | Harrow | United Kingdom | London | View |
| Taylor, John | Michigan State University | Director Wellness & Counseling | East Lansing | United States | Michigan | View |
| Taylor, Kathleen | Eclipse Therapy Group | Outpatient Therapist | Haverford | United States | Pennsylvania | View |
| Taylor, Lacey | Taylor Psychology & Health, PLLC | Psychologist | Boulder | United States | Colorado | View |
| Taylor, Michelle | Health Psychology Research | Researcher/Clinical Psychologist | Egham | United Kingdom | Surrey | View |
| Taylor, Paul | Crosswinds Recovery | Addiction Counselor | Missoula | United States | Montana | View |
| Tchernis, Lissa | Private Practice | Psychologist | Decatur | United States | Georgia | View |