| Name | Affiliation | Occupation / Position Title | City | Country | State | |
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| Witherden, Jennifer | University of Bristol | Health Psychologist and Research Associate | Cardiff | United Kingdom | | View |
| Witalewska, Agnieszka | Prywatna praktyka psychoterapeutyczna | Psychoterapeutka, Coach ICF PCC | Wrocław | Poland | | View |
| Wise, Sara | University of Iowa Carver College of Medicine | Clinical Assistant Professor | Iowa City | United States | Iowa | View |
| Wiscovitch, Ashley | Private Practice in Brooklyn | MHC-LP | Brooklyn | United States | New York | View |
| Wischenka, Danielle | Better Health Therapy | Founder | San Jose | United States | California | View |
| Wirtz, Jan | ACBS | Psychotherapist | Berlin | Germany | Berlin | View |
| Winther Rojas, Hary | PRANA Center for evidence-based psychology | Clinical Psychologist and Psychotherapist | Cobán, Alta Verapaz | Guatemala | Alta Verapaz | View |
| Winterrowd LaVere, Molly | Hawai'i Center for Sexual & Relationship Health | Psychologist | Honolulu | United States | Hawaii | View |
| Winterfeld, Oleg | Rheinhessen Fachklinik Alzey | Psychologist | Alzey | Germany | Rheinland-Pfalz | View |
| Winsløv, Jan-Henrik | Psykologerne Aars ApS | Psychologist | Aars | Denmark | North Jutland | View |
| WINE, IAN | OCSWSSW and OASW | Clinician | Markham | Canada | Ontario | View |
| Winchester, Jake | UCHealth | Licensed Professional Counselor | Parker | United States | Colorado | View |
| Wilson, Lisa | Southend Psychology and Ahead for Life | Practitioner Psychologist | Southend-on-Sea | United Kingdom | Essex | View |
| Wilson, Lianna | Private Practice | Clinical Psychologist | Pittsfield | United States | Massachusetts | View |
| Wilson, Erica | Monarch Learning Group, LLC | Executive Director, Owner | Newport | United States | Oregon | View |
| Wilson, Benjamin | Okanogan Behavioral Healthcare | Substance use disorder professional and crisis responder | Omak | United States | Washington | View |
| Wilson, Ann | unknown | Clinical Psychologist | | United States | | View |
| Wills, Jawann | LCSW-C | Psychotherapist | Columbia | United States | Maryland | View |
| Willows, Jim | CPA | Dr | Winnipeg | Canada | Manitoba | View |
| Willimott, Rachel | Encompass Therapy | Licensed Clinical Social Worker | Oakland | United States | California | View |
| Williamson, Julie | LPC | Founder/Therapist | Richmond Heights | United States | Missouri | View |
| Williamson, Garry | BAART Programs Oakland | Psychologist | Oakland | United States | California | View |
| Williams, Tracey | Private Practice Wollongong NSW Australia | Clinical Psychologist | Wollongong | Australia | New South Wales | View |
| Williams, Michael | Optimal Outcomes | Executive Director | Overland Park | United States | Kansas | View |
| Williams, Lynn | Department of Defence (ARMY) | Clinical Psychologist | NOOSA HEADS | Australia | Queensland | View |
| Williams, Kelsey | Centre Counseling and Wellness | Pre-licensed Therapist | State College | United States | Pennsylvania | View |
| Williams, Julie | Private Psychology Practice | Licensed Marriage Family Therapist | GARDEN CITY | United States | Idaho | View |
| Williams, Gwyneth | Self-employed private practice | Licensed Clinical Social Worker | Washington | United States | District of Columbia | View |
| Williams, Gabrielle | OUSD | BCBA | Oakland | United States | California | View |
| Williams, Charlotte | St Wilfrid's Hospice | Consultant in Palliative Medicine | Bosham Chichester | United Kingdom | West Sussex | View |
| Williams, Allison | Private Practice | Licensed Clinical Psychologist | Ridgeland | United States | Mississippi | View |
| Willems, Robbin | Praktijk Perspectief Hasselt | Psychologist/psychotherapist | Hasselt | Belgium | Limburg | View |
| Willard, Ryan | Stevenson University | Assistant Professor | Stevenson | United States | Maryland | View |
| Willaert, Sofie | Asspect | Psychotherapist | Lippelo | Belgium | Antwerpen | View |
| Wilks, Martin | Independent Practitioner (London & Suffolk) | Chartered Counselling Psychologist | Woodbridge | United Kingdom | Suffolk | View |
| Wilkes, Ryan | Wasatch Psychological Services, LLC | Licensed Psychologist | Salt Lake City | United States | Utah | View |
| Wilhelm, Laura | WVU Department of Beh Med & Psychiatry-Charleston Division | Associate Professor | CHARLESTON | United States | West Virginia | View |
| Wilder, Chip | Retired from practice at this time | Clinical Social Worker | Needham | United States | Massachusetts | View |
| Wilder Schaaf, Kathryn | Richmond CBT Center | Dr. | Richmond | United States | Virginia | View |
| Wiesenthal, Naomi | Forest City Psychological Services | Psychologist | London | Canada | Ontario | View |
| Wierzbinski, Tom | BACB | BCBA | Chicago | United States | Illinois | View |
| Wiemer, Kelsey | Power to Live Foundation | Psychotherapist | | United Kingdom | | View |
| Wielenska, Regina | Instituto Continuum, DíadeLab and IPqHCFMUSP | Clinical Psychologist and supervisor | São Paulo, Capital | Brazil | Sao Paulo | View |
| Wickwire Cheek, Dana | DMW Behavioral Health Services. LLC | Social worker/therapist | GARNER | United States | Iowa | View |
| Whooley, Shawn | Self-employed private practice | Licensed Psychologist | Parkton | United States | Maryland | View |
| Whittingham, Koa | The University of Queensland | Senior Research Fellow | Brisbane | Australia | Queensland | View |
| Whitish, Emily | Private Psychology Practice | Psychotherapist & ACT Consultant | SEATTLE | United States | Washington | View |
| Whiting, Diane | TBI Psychology | Clinical Psychologist | Shell Cove | Australia | New South Wales | View |
| Whitfield, Henry | Mindfulness Training Ltd. | Director of Mindfulness Training | London | United Kingdom | London | View |
| Whites, Laura | LWPractice | Licensed. Clinical Social Worker | New Orleans | United States | Louisiana | View |
| Whiteley, Christopher | NHS and Private Practice | Chief Psychologist | London | United Kingdom | London | View |
| Whiteaker, Cherity | A Healing Intention LLC | Mental Health Therapist | Newberg | United States | Oregon | View |
| White, Victoria | Private Practice | Mental Health Counselor | Seattle | United States | Washington | View |
| White, Tyrone | Fairfax-Falls Church Community Services Board | Crisis Intervention Specialist | Washington | United States | District of Columbia | View |
| White, Ross | Queen's University Belfast | Professor of Clinical Psychology | Belfast | United Kingdom | Co Antrim | View |
| White, Kristi | Kristi Cash White Counseling | counselor | Gresham | United States | Oregon | View |
| White, Katie | University of North Florida | Assistant Director/Director of Training | St. Augustine | United States | Florida | View |
| White, Craig | ProfC.org | Professor | Ayr | United Kingdom | South Ayrshire | View |
| White, Cat | cbtfit.com | Cognitive Behavioural Psychotherapist | St Dogmaels | United Kingdom | Dyfed | View |
| White, Brooke | none | Licensed Clinical Psychologist | Richmond | United States | Vermont | View |
| Wheeler, Philippa | BPS / BABCP | Consultant Therapist | Salisbury | United Kingdom | Wiltshire | View |
| Wharton, Emily | Private Practice/Stanford Hospital | Clinical Psychologist | Palo Alto | United States | California | View |
| Wetterneck, Chad | Rogers Behavioral Health | Clinical Director of Trauma Recovery | Oconomowoc | United States | Wisconsin | View |
| Westrup, Darrah | Private Practice | Licensed Clinical Psychologist and Consultant | Durango | United States | Colorado | View |
| Westphal, Maren | Pace University | Associate Professor of Psychology | New York | United States | | View |
| Weston, Joanne | Private consulting practice | Clinical Psychologist | Bristol | United Kingdom | | View |
| Westby, Frederick | Rick Westby Therapy | Counselor/Owner | Coeur d Alene | United States | Idaho | View |
| West, Jennifer | University of Rochester Medical Center | Psychologist | Rochester | United States | New York | View |
| West, Heather | Confluence Behavioral Health | Psychotherapist | Moses Lake | United States | Washington | View |
| West, April | clinical psychologist | Psychologist and Executive Coach | Venice | United States | California | View |
| Wessels, Hannes | HPCSA | Educational Psychologist | Cape Town | South Africa | Western Cape | View |
| Wesenberg, John | Kinship Behavioral Health and Support | Clinical Director | Aubrey | United States | Texas | View |
| Werner, Kelly | San Francisco Acceptance and Commitment Therapy | Clinical Psychologist | Sausalito | United States | California | View |
| Wenzel, David | David Wenzel Counselling | Clinical Counsellor | Smithers | Canada | British Columbia | View |
| Wentworth, Colleen | Wentworth Psychological, PLLC | Psychologist | Cary | United States | North Carolina | View |
| Wensley, Katherine | Football Australia | Psychologist | Point Arkwright | Australia | Queensland | View |
| Wenner, Tera | Best Practices Behavior and Support, LLC | BCBA | Rockford | United States | Illinois | View |
| Wengenroth, Matthias | Psychotherapeutische Praxis | Diplom-Psychologe | Solingen | Germany | Nordrhein-Westfalen | View |
| Wemple, Christopher | Retired Psychologist | Psychologist | Chevy Chase | United States | Maryland | View |
| Wells, Valerie | Valerie Wells Therapy, PLLC | Therapist | Austin | United States | Texas | View |
| Wells, Gregory | none | Psychologist | San Francisco | United States | California | View |
| Welfing, Maaike | RBCZ 190111R | Psychosocial therapist/ Lifecoach | GRONINGEN | Netherlands | Groningen | View |
| Welches, Philip | Independent Practice | Clinical Psychologist | Park Ridge | United States | Illinois | View |
| Welch-Pemberton, Vanessa | The Portland Clinic | Clinical Psychologist | camas | United States | Washington | View |
| Weits Garcia, Genelle | Licensed Clinical Health Psychologist | Clinical Health Psychologist | San Diego | United States | California | View |
| Weiss, L.I.C.S.W., C.A.S., Robert | None at present | Robert L Weiss, LICSW, CAS | MA | United States | Massachusetts | View |
| Weiss, Karen | Mayo Clinic | Pediatric Pain Psychologist | Rochester | United States | Minnesota | View |
| Weiss, Eli | Eli Weiss, Psychologist | Clinicial Psychologist | Half Moon Bay | United States | California | View |
| Weis, Kate | Private Practice | Clinical Psychologist | Galway | Ireland | Galway | View |
| Weinstein, Jonathan | Northport VA Medical Center | Clincal Psychologist | Northport | United States | New York | View |
| Weinberg, Jacob | Private Practice | Psychotherapist | Newton | United States | Massachusetts | View |
| Wein, Marcella | eigene Praxis | psychotherapist | Frankfurt am Main | Germany | Hessen | View |
| WEIL, TIMOTHY | Tandem Behavioral Health & Wellness | Founder/Director | Tampa | United States | Florida | View |
| Weiher, Andrew | Novato Unified School District | Behavioral Health Specialist | Petaluma | United States | California | View |
| Wedin, Sharlene | Medical University of South Carolina | Clinical Psychologist/Associate Professor | Charleston | United States | South Carolina | View |
| Webb, Victoria | Main Line Therapy and Psychological Services LLC | Clinical Psychologist | Wayne | United States | Pennsylvania | View |
| Way, Francine | Non-Profit Outpatient Community Based Mental Health/Private Practice | Clinical Supervisor/Therapist | Long Beach | United States | California | View |
| Watson, Susan | New Zealand College of Clinical Psychologists | Clinical Psychologist | Wellington | New Zealand | Wellington | View |
| Watson, Sheryl | LPC, LMHC, CCMHC | Licenced Professional Counselor, Licensed Mental Health Counselor, Certified Clinical Mental Health Counselor | Portland | United States | Oregon | View |
| Watson, Barbara | self-employed | psychologist | Philadelphia | United States | Pennsylvania | View |