| Name | Affiliation | Occupation / Position Title | City | Country | State | |
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| Maksymenko, Oleksandra | rehabilitation center | psychotherapist | Kyiv | Ukraine | Kyiv | View |
| Malcolm, Andrea | University of Western Sydney, School of Social Sciences and Psychology | Clinical Psychologist | Sydney | Australia | New South Wales | View |
| Maldonado, Julieta | Consultorio particular | Psicóloga | Arequipa | Peru | | View |
| Malek, Cheryl | HPCSA | Counselling Psychologist | Gauteng | South Africa | Gauteng | View |
| Maleki, Masoomeh | Government job | Councellor | Mashad | Iran, Islamic Republic of | | View |
| Males, Ailsa | NSW Department of Education & Communities | Senior Psychologist, Education | Riverstone | Australia | New South Wales | View |
| Mali, Gabriel | clinic | Psychologist | Campo Grande | Brazil | Mato Grosso do Sul | View |
| Malkin, Paul | Self -employed | Licensed Clinical Social Worker | Fremont | United States | California | View |
| Malone, Naomi | Dr Naomi Malone Consulting / La Trobe University | Psychologist | Boort | Australia | Victoria | View |
| Manchanda, Mai | Kaiser Permanente Behavioral Health Center | Clinical Psychologist | Santa Clara | United States | California | View |
| Mandel, Stephanie | Portland VAMC | Clinical Psychologist | Portland | United States | Oregon | View |
| Mandil, Javier | Fundación ETCI | Director | Buenos Aires | Argentina | | View |
| Manduchi, Katia | IESCUM, ASCCO | Psychotherapist | Rimini | Italy | Rimini | View |
| Maner, Safir | Private Clinical Practice | Clinical Psychologist | Nicosia | Cyprus | | View |
| Manetti-Cusa, Julian | Manetti-Cusa & Associates | Psychologist | Brooklyn | United States | New York | View |
| Manfredi, Jesica | Private Psychology Practice | Therapist | Buenos Aires | Argentina | Capital federal | View |
| Mangnus, Paul | private practise | clinical psychologist | St. Jansteen | Netherlands | Zeeland | View |
| Manlick, Christopher | Iron Mountain VAMC- CBOC | Staff psychologist | Marquette | United States | Michigan | View |
| Manney, Joshua | Josh Manney Therapy | Licensed Marriage and Family Therapist | CAMARILLO | United States | California | View |
| Mannucci, Isabella | Private practice | Psichotherapist | Verona | Italy | Verona | View |
| Manser, Suzanne | Suzanne Manser, PhD | psychologist | Portland | United States | Oregon | View |
| Mansfield, Anita | ? | CMHN | Blue Mountains | Australia | New South Wales | View |
| Mansilla Carrasco, Daniela | Consulta Particular | Psicóloga | santiago | Chile | Santiago Metropolitan | View |
| Manzione, Raul | Arviem - Psicologia e Treinamento Profissional / ACT Skills Lab | CEO, Clinical Psychologist and ACT Trainer | São Paulo | Brazil | Sao Paulo | View |
| Maravilla, Mirna | mm psicología | Psychologist | Ensenada | Mexico | Baja California | View |
| Marcantel, W Wade | LPC | Licensed Professional Counselor | LAKE CHARLES | United States | Louisiana | View |
| Marchant, Michael | LCSW | behavioral health clinician II | berkeley | United States | California | View |
| Marchezini, Vivian | Consultório particular/Private practice | Psychologist | Belo Horizonte | Brazil | Minas Gerais | View |
| Marciniak, Katarzyna | Katarzyna Marciniak | psycholog, psychoterapeuta, pedagog | Warszawa | Poland | | View |
| Marfleet, Fiona | British Psychological Society/HCPC | Registered Health Psychologist | Wotton-Under-Edge | United Kingdom | | View |
| Mărginean, Ovidiu | Romanian College of Psychologists | Clinical Psychologist, Psychotherapist | Suceava | Romania | Suceava | View |
| Margrove, Eliza | epsychol.com | Chartered Psychologist & Counsellor | Kingsley | United Kingdom | Hampshire | View |
| Mariani, Pablo | Private Psychology Practice | Licenciado en Psicología | Ramos Mejía | Argentina | Buenos Aires | View |
| Markkula, Sanna | Mielenhuolto Interventions Oy + University of Jyväskylä | Psychologist/Entrepreneur + Project researcher | Espoo | Finland | Uusimaa | View |
| Markon, Matthew | none | Psychotherapist | Pittsburgh | United States | Pennsylvania | View |
| Marks, Donald | Kean University | Associate Professor, Director of Clinical Training | Milford | United States | New Jersey | View |
| Marquez, Betsy | ABA | Board-Certified Behavior Analsyst | Honolulu | United States | Hawaii | View |
| Marquez, Francisco | Privat Practise | Psychologist | Cordoba | Spain | Córdoba | View |
| Marquez, Veronica | Private Practice | Clinician | Bogota | Colombia | Distrito Capital de Bogotá | View |
| Marrero, Christina | Emerging Light Therapy | Psychotherapist | Flourtown | United States | Pennsylvania | View |
| Marriott, Michael | ACT mental health | Senior Mental Health Clinician | Derby | Australia | Western Australia | View |
| Marron, Rodrigo | Centro gestaltico San Isidro | Engineer/Counselor | OLIVOS | Argentina | | View |
| Marrone, Sonia | Government of Manitoba | Senior Psychologist | Winnipeg | Canada | Manitoba | View |
| Marroquin, Natasha | Rethynk Coaching & Consulting | PhD, BCBA-D, LMFT | La Mirada | United States | California | View |
| Marshall, Amanda | Brighter Outcomes | Clinical Behaviour Analyst | MANLY | Australia | Queensland | View |
| Marshall, David | Kaiser Permanente | LMFT LMHC | Beaverton | United States | Oregon | View |
| Marshall, Sally | KBT Skeppsbron | authorized psychotherapist CBT | Gothenburg | Sweden | Västra Götalands län | View |
| Marshall, Sarah | Australian Psychological Society (APS) | BSc (Hon), PhD. Psychologist in private practice | Sydney | Australia | New South Wales | View |
| Marshall, Stephen | Cambridge Psychology Group/McLean Hospital/Harvard Medical School | Clinical Psychologist | Arlington | United States | Massachusetts | View |
| Marsland, Soph | Australian Psychological Society | Psychologist | Melbourne | Australia | Victoria | View |