| Name | Affiliation | Occupation / Position Title | City | Country | State | |
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| Wroczynska, Agnieszka | Poradnia CBT | psychotherapist, supervisor | Gdynia | Poland | pomorskie | View |
| Wroughton, Katherine | LMSW | Clinical Social Worker | Ypsilanti | United States | Michigan | View |
| Wrzesniowska, Joanna | SWPS / www.wrzesniowska.pl | psychologist therapist | Siedlce | Poland | mazowieckie | View |
| Wubs, Marieke | ACT mental health | ACT Coach and Educator | Dordrecht | Netherlands | Zuid-Holland | View |
| Wulfekuhler, Kurt | Counselor | Professional Counselor | Albuquerque | United States | New Mexico | View |
| Wunsche Risolia, Isabelle | Universidade Estadual de Londrina | Psicóloga | Londrina | Brazil | Parana | View |
| Wuo, Katia | Autônoma | Psicóloga | Quatro Barras PR | Brazil | Parana | View |
| Wusik, Michael | Psychology Group of Tampa Bay | Psychologist | Tampa | United States | Florida | View |
| Xiong, Pengdi | Institute of Psychology, Chinese Academy of Sciences | postgraduate | beijing | China | | View |
| Xu, Shousen | Capital University of Physical Education and Sports | Professor | Beijing | China | Beijing | View |
| Yadollaee, Sanaz | University | Psychologist | Kashan | Iran, Islamic Republic of | | View |
| Yam, Anna | Bloom Psychology | Clinical Psychologist | San Marcos | United States | California | View |
| Yamada, Fuminori | CBS心理発達教育センター | representatives | Miura | Japan | Kanagawa | View |
| Yanchuk, Viacheslav | self-employed | Psychologist | Kyiv | Ukraine | Kyiv | View |
| Yang, Danielle | Fantasy Frameworks Therapy | Behavior Analyst | West Jordan | United States | Utah | View |
| Yang, Hannah | Balanced Awakening | Licensed Clinical Psychologist | Chicago | United States | Illinois | View |
| Yang, Peggy | Baylor College of Medicine | Licensed Psychologist | Houston | United States | Texas | View |
| Yap Jia Yung, Jason | SJKC Chin Hua | Student | KUCHING | Malaysia | Sarawak | View |
| Yarosh, Christine | Self-employed private practice | Clinical Psychologist | Lafayette | United States | California | View |
| Yartsev, Alexander | not affiliated | Psychologist | Tbilisi | Georgia | Tbilisi | View |
| Yates, Holly | ACBS, Board member of FAP/CEP, Boars member of ACL Global Project, NCBLCMHC | ACT/ FAP Trainer Psychotherapist in Private Practice | Raleigh | United States | | View |
| YAU, Pui TIk | The Chinese University of Hong Kong | Project Manager | Sha Tin | Hong Kong | Sha Tin | View |
| Yavuz, Fatih | Medipol University, Department of Psychology | Psychiatrist | Istanbul | Turkey | Istanbul | View |
| Yi, Kyong | Portland Psychotherapy Clinic, Research, & Training Center | Director of Clinical Operations | Portland | United States | Oregon | View |
| Yoann, Vasnier | Centre Hospitalier (Public Hospital) | Psychologue (Psychologist) | Abbeville | France | Somme | View |
| Yoder, Stephanie | Brooke Glen Behavioral Hospital | Director of Clinical Services | Ft. Washington | United States | Pennsylvania | View |
| Yong, Michelle | Minds in Bloom Psychology Services | Clinical psychologist | Kuala lumpur | Malaysia | | View |
| Yoshida, Lauren | Lauren K Yoshida, PsyD, LLC | psychologist | Aiea | United States | Hawaii | View |
| Yoshimoto, Manabu | DEEP SLOW MOVE RIVER | Representative Psychologist | Kita-ku, Osaka | Japan | Osaka | View |
| Young, Brad | Arizona State University | BCBA/LPC | Lander | United States | Wyoming | View |
| Young, David | David Young Psychology | Clinical Psychologist | Wheelers Hill | Australia | Victoria | View |
| Young, Kurtis | Private Practice | Private Practitioner | Gold Coast | Australia | Queensland | View |
| Young, Tamara | Signature Behavioral Health | Board Certified Behavior Analyst | College Park | United States | Maryland | View |
| Yudiantara, Putu | Universitas Hindu Indonesia | Lecturer | Denpasar | Indonesia | Bali | View |
| Yukhymenko, Anna | Private Practice | Counselor | Ternopil | Ukraine | | View |
| YUKSEL AVCIOGLU, MUAZZEZ MERVE | Private Praxis | Clinical Psychologist, Ph.D. | ANKARA | Turkey | Ankara | View |
| Yüksel, Zühre | Istinye University | Clinical Psychologist | Istanbul | Turkey | Istanbul | View |
| Yusufov, Miryam | Dana-Farber Cancer Institute | Psychologist | Boston | United States | Massachusetts | View |
| Zabel, Carl | The Royal Melbourne Hospital | Director of Psychology | Parkville | Australia | Victoria | View |
| Żabicka, Aleksandra | Akademia Humanitas | Trainer, behaviour analyst | Gliwice | Poland | śląskie | View |
| Zacharia, Marianna | University of Cyprus, ACTHEALTHY lab | PhD candidate in Clinical Psychology | Nicosia | Cyprus | Lefkosia | View |
| Zagarese, Antonio | ASCCO, Parma, Italy | Psicologo | Parma | Italy | Parma | View |
| Zahorchak, Christine | Pennsylvania counseling services | Clinical Psychologist | Harrisburg | United States | Pennsylvania | View |
| Zaide, Josef | College of Health and Care Professionals of British Columbia | Psychologist | Vancouver | Canada | British Columbia | View |
| Zainal, Ummi | Ministry of Health Malaysia | Clinical Psychologist | kerling | Malaysia | Selangor | View |
| Zakerfard, Nayyereh | clinic | Child and adolescent | Isfahan | Iran, Islamic Republic of | | View |
| Zakriev, Deni | self-employed | Psychologist | Moscow | Russian Federation | | View |
| Zali zadeh, Mohsen | Mohsen | Psychologist | Dezful | Iran, Islamic Republic of | Khuzestan | View |
| Zaltieri, Simone | ACT-Italia, IESCUM, AUSL Reggio Emilia | Psychotherapist | Piacenza | Italy | Piacenza | View |
| Załuski, Jacek | Ośrodek Kształtowania Osobowości | Psycholog/Właściciel | Warszawa | Poland | mazowieckie | View |