| Name | Affiliation | Occupation / Position Title | City | Country | State | |
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| DiChiara, Carmine | Private Practice | Clinical Psychologist | Newton Upper Falls | United States | Massachusetts | View |
| Dickman, Grace | Real Therapy | Creator & Therapist | Brooklyn | United States | New York | View |
| Dickson, Daniel | University of Wisconsin school of Medicine and Public Health | Clinical Assistant Professor | Madison | United States | Wisconsin | View |
| Dickter, Ben | USAF | Psychologist | Alamogordo | United States | New Mexico | View |
| Digout Erhardt, Angela | Centrepointe Professional Services | Clinical Psychologist | Nepean | Canada | Ontario | View |
| Dijkstra-le Clercq, Marjanne | Praktijk Dijkstra | child and youth psychologist/mental health psychologist | Nieuwkoop | Netherlands | Zuid-Holland | View |
| Dijkstra, Jeanette | Clinical Psychologist, PC | PhD | Maastricht | Netherlands | Limburg | View |
| Dillenburg, Mariana | Centro de estudos da família e do indivíduo (Cefi) | Clinical psychologist and master student | PORTO ALEGRE | Brazil | Rio Grande do Sul | View |
| DiMatteo, Julie | CBT Specialists of New Jersey | Psychologist | Rochelle Park | United States | New Jersey | View |
| Dindo, Lilian | Baylor College of Medicine | Associate Professor | Bellaire | United States | Texas | View |
| Dinovo, Salvatore | the ohio state university | Licensed Psychologist | San Diego | United States | California | View |
| Dionne, Frédérick | Université du Québec à Trois-Rivières | Psychologist, Assistant Professor | Trois-Rivieres | Canada | Quebec | View |
| Dittmar, Suzy | Private practice in Southwest London/Surrey | ACT Therapist | West Molesey | United Kingdom | Surrey | View |
| Dixon, Joseph | Spectrum Academy | Behavior Program Administrator | Pleasant Grove | United States | Utah | View |
| Doczy, Adrian | no | Psychologist | LAKE MACQUARIE | Australia | New South Wales | View |
| Dodrill, Carrie | Private Practice | Psychologist | Houston | United States | Texas | View |
| Doensen, Marieke | Mental Fit | Therapist | Venlo | Netherlands | Limburg | View |
| Dolber, Trygve | University Hospitals/Case Medical Center | Staff Psychiatrist | Shaker Heights | United States | Ohio | View |
| Dollah, Siti Nordiana | Psychiatric Department | Doctor | Wangsa Maju | Malaysia | Wilayah Persekutuan Kuala Lumpur | View |
| Dombeck, Mark | Psychtools Psychology Group | Psychologist | Alameda | United States | California | View |
| Domurat, Marcin | Trzecia Fala | Psychoterapeuta | | Poland | mazowieckie | View |
| Donovan, David | UCSF | Clinical Psychologist | Portland | United States | Oregon | View |
| Donovan, Holly | Healing Insights Counseling, LLC | LCSW | Brunswick | United States | Maine | View |
| Doorn, Petra | Private Practice | psychologist & trainer in ACT | Utrecht | Netherlands | Utrecht | View |
| Doran, Justin | AHPRA | Clinical Psychologist | Sydney | Australia | New South Wales | View |
| Doreste, Raura | Montefiore Medical Center | Attending Psychologist | Bronx | United States | New York | View |
| Dorey, Lucy | University of Southampton & Evolve Training and Therapy | Researcher, Counsellor, ACT Therapist and Supervisor | Southampton | United Kingdom | Hampshire | View |
| Dorgan, David | emcc | Founder | Castlemartyr | Ireland | Cork | View |
| Dorotich, Cherie | all round wellness | PSYCHOLOGIST | HALLS HEAD | Australia | Western Australia | View |
| Dos Santos, Bruno | none | Psychologist | Garca | Brazil | Sao Paulo | View |
| dos Santos, Gabriela | Private Practice | Psychotherapist | São Paulo | Brazil | Sao Paulo | View |
| Doshi, Sapna | Mind Body Health LLC | Licensed Clinical Psychologist | Arlington | United States | Virginia | View |
| Dostal, Amy | Integrated Psychology Centre | Psychologist | Chelsea Heights | Australia | Victoria | View |
| Dotten, André | Psychotherapeutische Praxis | Diplom-Psychologe | Essen | Germany | Nordrhein-Westfalen | View |
| Dourado, Júlia | Instituto Inspire | Psychologist | Piracicaba | Brazil | Sao Paulo | View |
| Dowdy, Melvin | Delphi Initiatives [professional corporation] | psychologist, consultant, pastoral counselor | Richmond | United States | Virginia | View |
| Downhour, Shawn | LPC, LMFT | LPC, LMFT | West Monroe | United States | Louisiana | View |
| Doyle, Freda | Transformations Counselling Centre | Registered Psychologist | Edmonton | Canada | Alberta | View |
| Doyle, Hanna | Within Counseling, LLC | Licensed Mental Health Counselor | Poulsbo | United States | Washington | View |
| Doyle, Oli | Australian Counselling Association | Counsellor | Golden Square | Australia | Victoria | View |
| Drake, Chad | Battle Creek VA Medical Center | Staff Psychologist | Battle Creek | United States | Michigan | View |
| Drapkin, Michelle | CBT Center | Owner/Director | Highland Park | United States | New Jersey | View |
| Draughn, Jessica | True North Therapy & Wellness | Mental Health Counselor | West Des Moines | United States | Iowa | View |
| Dressler, Courtney | Live Heal Grow Counseling | Therapist | Columbia City | United States | Indiana | View |
| Driesen, Ann | Coach/Consultant/Trainer | ACT therapist | Turnhout | Belgium | Antwerpen | View |
| Drifmeyer, Kelsey | Reclaimed Divergence | Therapist | Lakeside Park | United States | Kentucky | View |
| Drift, Remko | Instituut voor Faalkunde | Expert in failure | Utrecht | Netherlands | Utrecht | View |
| Drossel, Claudia | Eastern Michigan University | Associate Professor | Ypsilanti | United States | Michigan | View |
| Droste, Iris | Iris Droste | life coach | Amsterdam | Netherlands | Noord-Holland | View |
| Drouin, Ivan | Nova Scotia Board of Examiners in Psychology | Psychologist | Antigonish | Canada | Nova Scotia | View |