| Name | Affiliation | Occupation / Position Title | City | Country | State | |
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| Dee Lomas, Helen | private practise | ACT/CBT/EMDR Therapist | London | United Kingdom | Hertfordshire | View |
| Dees, Sherry | none at the moment of writing | Therapist | Woodhaven | United States | Michigan | View |
| Dégas, Julie | Psykolog-Centrum (owner) | Clinical Psychologist | Odense | Denmark | Fyn | View |
| Degtiarova, Ruslana | Private Practice | Psychologist | Kyiv | Ukraine | Kyiv | View |
| Deibler, Marla | The Center for Emotional Health of Greater Philadelphia | Clinical Psychologist, Executive Director | Cherry Hill | United States | New Jersey | View |
| Dekker, Kelly | High Performance Academy | Licensed Sport and Performance psychologist | AMSTERDAM | Netherlands | Noord-Holland | View |
| del Aguila Vargas, Vanessa | Private Practice | Licenciada en Psicología | Lima | Peru | Lima | View |
| Del Río Antón, Cristina | Psicólogo Clínico | Psicologa | Salamanca | Spain | Salamanca | View |
| Del Río, Tania | ACBS Mexico Sur | Terapeuta ocupacional y Psicóloga | CANCUN | Mexico | Quintana Roo | View |
| Delahaye, François | Public Hospital | Geriatrician | Abbeville | France | Somme | View |
| DeLawyer, David | Private Practice | Clinical Psychologist | Boise | United States | Idaho | View |
| Deledda, Giuseppe | I.R.C.C.S. Resaerch and Hospital Institute "Sacro Cuore - Don Calabria", in Negrar di Valpolicella (VR) | Director Service Clinical Psychology | Mori | Italy | Trento | View |
| DeLizza, Alison | University of Nebraska Medical Center | Assistant Professor | Omaha | United States | Nebraska | View |
| Dell, Adam | Wheaton College | Psychologist | Mishawaka | United States | Indiana | View |
| Dellabernarda, Fabrizio | Independent Practice | Marriage and Family Therapist | San Francisco | United States | California | View |
| Deller, Clete | Betterhelp | Trauma Counselor | Fernandina | United States | Florida | View |
| DeLorme, Jenny | Interactive Kids | Clinician | Marlton | United States | New Jersey | View |
| DeLoveh, Heidi | DeLoveh Psychological Services, LLC | Psychologist | Albuquerque | United States | New Mexico | View |
| Delsink, Peter | Delsink psychotherapie | Clinical Psychologist | Nijmegen | Netherlands | Gelderland | View |
| Delver, Janine | ACBS BeNe | Drs. | Utrecht | Netherlands | Utrecht | View |
| DEMARTINO, DIANE | Camden Center | LCSW | Psychotherapist | Program Director | Los Angeles | United States | California | View |
| Demeester, Floriaan | Mr | Psychologist | | Belgium | Oost-Vlaanderen | View |
| Demiri, Val | HVRSD/Endicott College | District Wide Behavior Specialist/Adjunct Professor | Titusville | United States | New Jersey | View |
| Demirtaş, Muhyiddin Bera | Gülhane Eğitim ve Araştırma Hastanesi Psikiyatri | Resident Physician | Keçiören | Turkey | Ankara | View |
| Dempsey-Henofer, Helen | Psychotherapy | Clinical social worker | Charlotteville | United States | Virginia | View |
| Dempsey, Kristin | Wright Institute | Core Faculty | Berkeley | United States | California | View |
| den Tonkelaar, Wendela | Centrum voor Paardencoaching | Equine Assisted Therapist | Velp | Netherlands | Gelderland | View |
| Denmark, Jerrod | LCSW | Psychotherapist | | United States | Colorado | View |
| Derbyshire, Casey | Gateway Behaviour Services | Behaviour Analyst | Prince George | Canada | British Columbia | View |
| Dergun, Valentina | none | Psychotherapist | Geneva | Switzerland | Geneva | View |
| Derham, Michele | Missing Peace Counselling Services | Director/Counsellor | Broadview | Australia | South Australia | View |
| Derrig, Coda | Cleveland Clinic | Psychologist | Hartville | United States | Ohio | View |
| Desai, Nipa | Align Mind Therapy Services, LLC | Clinicial Supervisor/Psychotherapist | Philadelphia | United States | Pennsylvania | View |
| Deschênes, Lyne | Bureau privé | Psychologue | Repentigny | Canada | Quebec | View |
| Deshmukh, Joanna | Kaiser Permanente | Mental Health Group Therapist | Hillsboro | United States | Oregon | View |
| Desimone, Megan | The Life Balance | Clinical Counselor/Registered Social Worker | Vernon | Canada | British Columbia | View |
| Desrosiers, Julie | Centre de réadaptation Lucie-Bruneau | conseillère d'orientation | Montréal | Canada | Quebec | View |
| Detrick, Douglas | Way of Harmony | Therapist | Adel | United States | Iowa | View |
| Devenish, Bernadette | self-employed | Clinical Psychologist | Toowoomba | Australia | Queensland | View |
| DeVille, Danielle | Children's Mercy Hospital | Psychologist | Kansas City | United States | Missouri | View |
| DeVine, Gary | DeVine Interventions Group | Professional Counselor | Philadelphia | United States | Pennsylvania | View |
| Devlin, Hillary | Private Practice | Clinical Psychologist | New York | United States | New York | View |
| Dewane, Claudia | Clinical Support Associates | Clinical Social Worker/Professor | Lemoyne | United States | Pennsylvania | View |
| Dewar, Grant | An Open Conversation | CEO | Yankalilla | Australia | South Australia | View |
| Di Gangi Herms, Alida | Azienda Sanitaria dell'Alto Adige - Ospedale Comprensoriale di Bressanone -Servizio Psicologico | Psicologa Psicoterapeuta | Bressanone | Italy | | View |
| Di Lorenzo, Rosa | Private Psychology Practice | Licensed Clinical Psychologist, Supervisor | Sacramento | United States | California | View |
| Di Roma, Serena | Compsy | Neurosychologist | Online | Belgium | Brussels | View |
| Dianiska, Myron | Private Psychology Practice | psychologist | Sugar Land | United States | Texas | View |
| Dias, Júlia | Clinical Psychologist, PC | MSc | Belo Horizonte | Brazil | Minas Gerais | View |
| Díaz Salabert, Miguel | ONCE | Psychologist | Barcelona | Spain | Barcelona | View |