| Name | Affiliation | Occupation / Position Title | City | Country | State | |
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| Lionberger, Jack | LifePath Therapy Associates | Psychotherapist | Chicago | United States | Illinois | View |
| Liptak, Melissa | Middlepath SF | LMFT | San Francisco | United States | California | View |
| Liss, Jonathan | Weill Cornell Medical College | Clinical Psychologist/Assistant Clinical Professor | Croton on Hudson | United States | New York | View |
| Little, Florence | BACP UK - BPS | Counselling psychologist | Liss | United Kingdom | Hampshire | View |
| Littleton, Alex | Vivid Psychology Group | Clinical Psychologist | Englewood | United States | Colorado | View |
| Litwin, Peter | Private Practice | Psychologist | Amesbury | United States | Massachusetts | View |
| Liu, Congyue | England NHS | Clinical Behaviour Specialist | London | United Kingdom | London | View |
| liu, shuyuan | 北京师范大学 | 咨询师 | 北京 | China | Beijing | View |
| Liu, Xinya | Institute of Psychology of the Chinese Academy of Sciences | Counselor | Beijing | China | Beijing | View |
| Livermore, Emily | Stanford University School of Medicine, Department of Psychiatry and Behavioral Sciences | Clinical Assistant Professor | Stanford | United States | California | View |
| Livheim, Fredrik | Karolinska Institute, Stockholm. Department of clinical neuroscience | Clinical psychologist, PhD | Stockholm | Sweden | Stockholms län | View |
| Lizárraga Lomelí, Karla | UNIVA | Lic. Psicología, Lic. Nutrición, Docente. | Zapopan | Mexico | Jalisco | View |
| LIZARRAGA RAMOS, LEANDRO | PERU | PSICOLOGO | LIMA | Peru | Lima | View |
| LLC, Whitney | Graff Psychological Services | Licensed Clinical Psychologist | Chicago | United States | Illinois | View |
| Lloyd, Joda | Department of Professional Psychology | Head of Department | London | United Kingdom | | View |
| Lo Savio, Nicola | Istituto Tolman | Clinical Psychologist psychotherapist | Palermo | Italy | Palermo | View |
| Lo, Sherman | INSEAD | Adjunct Professor, ACT Coach | Perth | Australia | Western Australia | View |
| Lo, Timothy | Chicago Therapy Group | Therapist | Chicago | United States | Illinois | View |
| Lobato Casado, David | European University of Madrid | Professor. Psychologist | Madrid | Spain | Madrid | View |
| Locanto, Sviatlana | AHN | BHC | Erie | United States | Pennsylvania | View |
| LoCaste-Wilken, Brent | Greater Houston Psychiatric Associates | LCSW | Houston | United States | Texas | View |
| Lochtenberg, Pepijn | Focus like a Pro | Sport Psychologist | Hilversum | Netherlands | Noord-Holland | View |
| Lockyer, Mark | Australian Association of Social Workers | Social Worker | Quoiba | Australia | Tasmania | View |
| Loess, Priyadarshani | Portland Psychotherapy | Clinical Psychologist | Portland | United States | Oregon | View |
| Lofredo, Maximiliano | Universidad Abierta Interamericana (UAI) | Psicólogo | ciudad autonoma de buenos aires | Argentina | Capital federal | View |
| Logue, Sarai | New England Center for OCD and Anxiety | LICSW | Melrose | United States | Massachusetts | View |
| Lomax, Desmond | The arbinger institute | Therapist practitioner | New Freedom | United States | Pennsylvania | View |
| Loncar, Tom | Tom Loncar Executive Coaching | Director | ST PAULS | Australia | New South Wales | View |
| London, Tunisia | TEA of Life Holistic Behavioral Health Therapy, LLC | Clinical Social Worker/Owner | SPANISH FORT | United States | Alabama | View |
| Long, William | Compass Health Networks | Therapist | Columbia | United States | Missouri | View |
| Longhi, Carlotta | Cooperativa sociale Metamorfosi | Psychologist Psychoterapist | Milano | Italy | Milano | View |
| Lonic, Andrea | Pennsylvania counseling services | Outpatient Therapist | Carlisle | United States | Pennsylvania | View |
| Loomans-Kuijpers, Noëlle | www.praktijkamiant.nl | Psychosociaal Therapeut Beeldend /ACT therapeut | Asten | Netherlands | Noord-Brabant | View |
| Lopes - van Brummelen, Margriet | Assist Coaching | Autism Expert | TETERINGEN | Netherlands | | View |
| Lopes, Fernando | BABCP accred | ACT and CBT Psychotherapist | West Kirby, Wirral | United Kingdom | Merseyside | View |
| Lopez Rivera, Leonardo | AVI Aprendiendo a Vivir | Psychogist | Santa Cruz de la Sierra | Bolivia | | View |
| López Salas, Javier | UNAM | Psicoterapeuta | Ixtapaluca | Mexico | Mexico | View |
| Lopez-Brooks, Erin | M.Ed., BCBA, IBA | Special Education Teacher, BCBA | Round Rock | United States | Texas | View |
| Lopez, Francisca | Universidad de Almería | Professor | Almeria | Spain | | View |
| López, Gastón | Psinergia | Psicólogo clínico | Libertador San martin | Argentina | Entre Rios | View |
| Lopez, Luiz | Universidade Federal da Paraíba | Professor | João Pessoa | Brazil | Paraiba | View |
| Lopez, Michelle | Center for Stress and Anxiety Management | Licensed Clinical Psychologist | San Diego | United States | California | View |
| López, Sandra | Private Therapist | Psychologist | Bayamon | United States | Puerto Rico | View |
| Lopoukhine, Sofia | Counselling with Compassion | Registered Psychotherapist | Ottawa | Canada | Ontario | View |
| Lopresti, James | SunServe | Senior Clinical Supervisor | Wilton Manors | United States | Florida | View |
| Lopresti, Valentina | Profesional | Psicologa | Mendoza | Argentina | Mendoza | View |
| Lorance, Christopher | None presently | Psychologist | Columbia | United States | Missouri | View |
| Lotz, Norbert | BDP | Psychologischer Psychotherapeut | Frankfurt am Main | Germany | Hessen | View |
| Loureiro, Carla | Federal Univesity of Rio de Janeiro | Md | Rio de Janeiro, Rio de Janeiro, Brasil | Brazil | Rio de Janeiro | View |
| Loureiro, Lucia | - | Clinical Psychologist | Ciudad Autonoma de Buenos Aires | Argentina | Capital federal | View |