| Name | Affiliation | Occupation / Position Title | City | Country | State | |
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| Liu, Congyue | England NHS | Clinical Behaviour Specialist | London | United Kingdom | London | View |
| Litwin, Peter | Private Practice | Psychologist | Amesbury | United States | Massachusetts | View |
| Littleton, Alex | Vivid Psychology Group | Clinical Psychologist | Englewood | United States | Colorado | View |
| Little, Florence | BACP UK - BPS | Counselling psychologist | Liss | United Kingdom | Hampshire | View |
| Liss, Jonathan | Weill Cornell Medical College | Clinical Psychologist/Assistant Clinical Professor | Croton on Hudson | United States | New York | View |
| Lipson, Stacey | Illinois Behavioral Health Group | Clinical Psychologist | Skokie | United States | Illinois | View |
| Lionberger, Jack | LifePath Therapy Associates | Psychotherapist | Chicago | United States | Illinois | View |
| Lints-Martindale, Amanda | University of Manitoba | Assistant Professor | Steinbach | Canada | Manitoba | View |
| LINS, MARA | FACEFI- COLLEGE OF CENTER OF STUDIES OF FAMILY AND INDIVIDUAL; UNISINOS- UNIVERSITY OF VALE DO RIO DOS SINOS | Psychologist ; PhD in Clinical Psychology; IBCT Couple Therapist; Teacher; Researcher; Director | Porto Alegre | Brazil | Rio Grande do Sul | View |
| Linneman, Bellamy | Merakey | Clinical Support Therapist | Philadelphia | United States | Pennsylvania | View |
| Linhares, Ricardo | Consultas de Psicologia em Barcelos - Ricardo Linhares | Psychologist | Barcelos | Portugal | Braga | View |
| Lines, Laura | Amethyst Counseling | Owner/Therapist | Indianapolis | United States | Indiana | View |
| Lindstam, Peter | HealthPartners Outpatient Clinics | Psychotherapist | Inver Grove Heights | United States | Minnesota | View |
| Lindner, Cecilia | Uba | Psychologist | Ciudad autónoma de buenos aires | Argentina | Capital federal | View |
| Lindhout, Richard | nip | Psycholoog en Coach | Amsterdam | Netherlands | Noord-Holland | View |
| Lindfors, Mari | omART, private practitioner | Psychotherapist, Art Psychotherapist | Porvoo | Finland | Uusimaa | View |
| Lindenberg, Erica | Erica Lindenberg LCSW | Mental Health Therapist | Charlotte | United States | North Carolina | View |
| LINDEN, MELINA | Private Practice | Psychologist | Athens | Greece | | View |
| Limaymanta, Gustavo | PUCP | Lizano | Lima | Peru | Lima | View |
| Lima, Juliana | - | Psicóloga | Rio de Janeiro | Brazil | Rio de Janeiro | View |
| Lima, Italo | N.A. | Psicólogo Clínico | Maceió | Brazil | Alagoas | View |
| LIMA, AMONA PRISCILA | UniCEUB | Psicologa | BRASILIA | Brazil | Distrito Federal | View |
| Lima Leitão, Suyanne | NBTP | Psychologist | Rotterdam | Netherlands | Zuid-Holland | View |
| Lim, Sue-Anne | ACT Kuala Lumpur | Counsellor | Bemban, Jasin | Malaysia | Melaka | View |
| Lim, Sin Chee | Hospital Permai | Dr. | Johor Bahru | Malaysia | Johor | View |
| Lim, Ivan | Inner Quest Centre | Consultant Clinical Psychologist | Singapore | Singapore | | View |
| Lim, Eun | University of Toronto | Registered psychotherapist | Toronto | Canada | Ontario | View |
| Lillo, Sebastian | aa | Psicologo | Santiago | Chile | Santiago Metropolitan | View |
| Lillis, Jason | Brown Alpert Medical School | Associate Professor (Research) | Roseville | United States | California | View |
| Liliia, Kucher | Self employer | Psychologist | Kyiv | Ukraine | Kyiv | View |
| Liese, Bruce | University of Kansas Medical Center | Professor and Licensed Psychologist | Lawrence | United States | Kansas | View |
| Lieffering, Janet | NIP, Psyned | Psycholoog | Oegstgeest | Netherlands | Zuid-Holland | View |
| Lieffering, Heleen | Instituut voor Vraaggerichte Psychotherapie | Psychologist and Psychotherapist | Katwijk | Netherlands | Zuid-Holland | View |
| Liedtke, Florian | Dipl. Psych. Florian Liedtke | Praxis | Muenchen | Germany | Bayern | View |
| Liebman, Dale | Private Practice | Psychotherapist | Owings Mills | United States | Maryland | View |
| Lieberman-Lapan, Rhonda | LCSW-C | Psychotherapist | Silver Spring | United States | Maryland | View |
| Lieb, Robert | Pacific Psycare Associates | Clinical Psychologist | San Mateo | United States | California | View |
| Lichtenberger, Aldana | Centro Argentino de Terapias Contextuales | Therapist | Buenos Aires | Argentina | Capital federal | View |
| Libman, Stuart | PLEA School | Child Psychiatrist/Medical Director | Pittsburgh | United States | Pennsylvania | View |
| Libera, Beate | self-employed in Berlin | Psychotherapist in out-patient service | Berlin | Germany | Berlin | View |
| Liao, Betty | University of California, San Francisco | Psychologist | Fresno | United States | California | View |
| Li, Yan | Duke University | Licensed Psychologist | Durham | United States | North Carolina | View |
| Li, MaoWen | Shanghai Orientrue-Talkingpool | Consultant & R&D Director | Shanghai | China | Shanghai | View |
| Leyva Lopez, Boris | BACB, ABAI | BCBA | MIAMI | United States | Florida | View |
| Lewis, Richard | SwiftRiver Behavioral Health Consultation LLC/Maine Medical Center | Consultant/Clinical Assistant Professor | Yarmouth | United States | Maine | View |
| Lewis, John | The Centered Life Therapy | Counselor | Naperville | United States | Illinois | View |
| Lewis, Elizabeth | McLean Hospital/Harvard Medical School | Staff Psychologist | Belmont | United States | Massachusetts | View |
| Levitsky, Neil | University of Toronto | Psychiatrist | Toronto | Canada | Ontario | View |
| Levinson, Sarah | Creative Relating Psychology Psychotherapy and NYC Cognitive Behavioral | Therapist | New York | United States | New York | View |
| Levinsen, Nadia | Private Practice | Counsellor | Malmö | Sweden | Skåne län | View |