| Name | Affiliation | Occupation / Position Title | City | Country | State | |
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| Manzione, Raul | Instituto Par | Clinical Psychologist | São Paulo | Brazil | Sao Paulo | View |
| Manwaring, Jane | BABCP UK | Cognitive Behavioural Psychotherapist | Lancashire | United Kingdom | | View |
| Mantas, Andriana | College of Registered Psychotherapists of Ontario (CRPO) & Canadian Professional Counsellors Association (CPCA) | Registered Psychotherapist | Toronto | Canada | Ontario | View |
| Manso, Maria | Clínica de Psicología y Salud | Psicóloga clínica | Belo Horizonte | Brazil | | View |
| Mansfield, Anita | ? | CMHN | Blue Mountains | Australia | New South Wales | View |
| Manser, Suzanne | Suzanne Manser, PhD | psychologist | Portland | United States | Oregon | View |
| Manns, Annelise | Providence Medical Group | Psychologist- primary care behavioral health provider | Damascus | United States | Oregon | View |
| Manney, Joshua | Josh Manney Therapy | Licensed Marriage and Family Therapist | CAMARILLO | United States | California | View |
| Mann, Mark | Martinsburg VA Medical Center | Cheif of Mental Health Service Line | Martinsburg | United States | West Virginia | View |
| Mann-Wrobel, Monica | N/A | Licensed Psychologist | Chapel Hill | United States | North Carolina | View |
| Manlick, Christopher | Iron Mountain VAMC- CBOC | Staff psychologist | Marquette | United States | Michigan | View |
| Mangnus, Paul | private practise | clinical psychologist | St. Jansteen | Netherlands | Zeeland | View |
| Manfredi, Jesica | Private Psychology Practice | Therapist | Buenos Aires | Argentina | Capital federal | View |
| Manetti-Cusa, Julian | Union Square ACT Center, Columbia University | Psychologist | Brooklyn | United States | New York | View |
| Maner, Safir | Private Clinical Practice | Clinical Psychologist | Nicosia | Cyprus | | View |
| Manduchi, Katia | IESCUM, ASCCO | Psychotherapist | Rimini | Italy | Rimini | View |
| Mandile, Elena | self-employed | Self-employed psychologist | Saint-Petersburg | Russian Federation | Sankt-Peterburg | View |
| Mandil, Javier | Fundación ETCI | Director | Buenos Aires | Argentina | | View |
| Mandel, Stephanie | Portland VAMC | Clinical Psychologist | Portland | United States | Oregon | View |
| Manchanda, Mai | Kaiser Permanente Behavioral Health Center | Clinical Psychologist | Santa Clara | United States | California | View |
| Mamani Tito, Haydee | Hospital Víctor Larco Herrera | Psicóloga - Psicoterapeuta | Lima | Peru | Lima | View |
| Malthus, Sarah | New Zealand Psychological Society | Senior Clinical Psychologist/Clinic Director | | New Zealand | | View |
| Malone, Naomi | A Life Simply Lived Psychology | Psychologist | Boort | Australia | Victoria | View |
| Malkin, Paul | Self -employed | Licensed Clinical Social Worker | Fremont | United States | California | View |
| Malik, Ayiesha | Private Sector | Dr | Manchester M12 | United Kingdom | Greater Manchester | View |
| Malicki, Stanislaw | Private Practice | Licensed specialist in clinical psychology (psykologspesialist) | Hvam | Norway | Akershus | View |
| Males, Ailsa | NSW Department of Education & Communities | Senior Psychologist, Education | Riverstone | Australia | New South Wales | View |
| Malek, Cheryl | HPCSA | Counselling Psychologist | Gauteng | South Africa | Gauteng | View |
| Malde-Zoradi, Brandon | Two Chairs | Clinician | North Hollywood | United States | California | View |
| Malcolm, Andrea | University of Western Sydney, School of Social Sciences and Psychology | Clinical Psychologist | Sydney | Australia | New South Wales | View |
| Maklev, Riki | Lamerchav Clinic | מטפלת ומנחת קבוצות - MA, בגישת ACT ובפסיכודרמה | | Israel | | View |
| Mäkinen, Anna | Psykologipalvelu Prostellar | Occupational Health Psychologist | Vantaa | Finland | Uusimaa | View |
| Makadia, Dushyant (Shawn) | Sentiero | Postdoctoral Fellow | San Diego | United States | California | View |
| Mak, Yim Wah | School of Nursing, The Hong Kong Polytechnic University | Nursing/ Associate Professor | Hong Kong | Hong Kong | Yau Tsim Mong | View |
| Majeres, MD, Kevin | Harvard Medical School | Psychiatrist (MD) | Cambridge | United States | Massachusetts | View |
| Maitland, Daniel | University of Missouri - Kansas City | Associate Professor | Kansas City | United States | Missouri | View |
| Maitland, Alison | British Association of Sport and Exercise Scientists | Psychologist | Oxford | United Kingdom | Oxfordshire | View |
| Maison, Sara | Maison Wellness | Therapist | St Petersburg | United States | Florida | View |
| Maisel, Max | Beachfront Anxiety Specialists | Psychologist | Redondo Beach | United States | California | View |
| Maiojas, Maria Cecilia | psychology | psychology | Maldonado | Uruguay | Maldonado | View |
| Maio-Aether, Nicholas | Empowered: A Center for Sexuality LLC | Sexual Behavior Analyst, Certified Sexuality Counselor, LGBTQIA+ Family Systems Specialist | Saint Louis | United States | Missouri | View |
| Maingi, Lydiah | Kenyatta University | Lecturer | Nairobi | Kenya | | View |
| Maier, John | Lesley University | Private Practice | Cambridge | United States | Massachusetts | View |
| Maidenberg, Michelle | Westchester Group Works | Psychotherapist | Harrison | United States | New York | View |
| Maher, Michael | The Reeds Center | Clinical Psychologist, Director | New York | United States | New York | View |
| Mahabir, Bindiya | BACB | BCBA/Autism Life Coach | Dublin | United States | California | View |
| Maguire, Jenny | National Health Service (NHS) | Consultant Clinical Psychologist | Dundonald | United Kingdom | Co Down | View |
| Magomedov, Magomed | Argentina | Psychologist | Buenos Aires | Argentina | | View |
| Magni, Cristina | School of behavioral psychotherapy ASCCO | Clinical Psychotherapist | Parma | Italy | Parma | View |
| Magdy, Dahlia | Motivational Institute for Behavioral Health, LLC | Clinical Psychologist | Fort Lauderdale | United States | Florida | View |