| Name | Affiliation | Occupation / Position Title | City | Country | State | |
|---|
| Siemann, Benjamin | Siemann Psychotherapie (self employed) | Facharzt für Psychosomatik und Psychotherapie | Wedel | Germany | Schleswig-Holstein | View |
| Sieradzki, Adam | Privat Practise | Psychologist | Bielawa | Poland | dolnośląskie | View |
| Sierra Duque, Cesar | Private clinic | Clinical Psychologist | Cali | Colombia | Valle del Cauca | View |
| Sifers, Sarah | Mankato Clinic | Psychologist | Mankato | United States | Minnesota | View |
| Sigurðsson, Haukur | Haukur Sigurðsson sálfræðingur | Clinical Psychologist | Reykajvík | Iceland | Reykjavik | View |
| Sijtsma, Martijn | Sijtsma Coaching, Training & Advies | Coach / Organizational Psychologist | Groningen | Netherlands | Groningen | View |
| Sikora, Magdalena | Magdalena Sikora Psychoterapia i Szkolenia | Psycholog | Gdynia | Poland | | View |
| Sikora, Piotr | Manat DBT Team / Ignatianum University | trainer / professor | Krakow | Poland | małopolskie | View |
| Silberleitner, Nicola | Familjeläkarna Luthagen | Leg. psykolog, leg. psykoterapeut, specialist i psykologisk behandling och psykoterapi | Uppsala | Sweden | Uppsala län | View |
| Silberstein Tirch, Laura | The Center for Compassion Focused Therapy | Clinical Psychologist | New York | United States | New York | View |
| Silva, Amanda | Universidade de Brasília - UnB | PHD degree in progress | Brasília | Brazil | Distrito Federal | View |
| Silva, Barbara | Fundacion Foro para la Salud Mental | Lic. Psicología | Moreno | Argentina | Buenos Aires | View |
| Silva, Camila | CECONTE | Psicóloga Clínica | Santo André | Brazil | | View |
| Silva, Matias | Uba | Licenciado en Psicologia | Buenso aires | Argentina | Capital federal | View |
| SILVA, ORLAN | FLEXUS PSICOLOGIA COMPORTAMENTAL | PSYCHOLOGIST | PETROLINA | Brazil | Pernambuco | View |
| Silva, Rodrigo | Servidor Público | Psicólogo | Imperatriz | Brazil | Maranhao | View |
| Silva, Sara | Autônoma | Psicóloga Clínica | Coronel Fabriciano | Brazil | | View |
| Silva, Sofia | | Psychologist | Barueri | Brazil | Sao Paulo | View |
| Silva, Victor | UNIR+ | Director | ARMENIA | Colombia | Quindio | View |
| Silveira, Julia | Little Satori Psychotherapy | Psychotherapist/ LCSW | New Haven | United States | Connecticut | View |
| Silverman, Julia | Adult and Adolescent Counseling | Therapist | El Paso | United States | | View |
| Silvestri, Ramon | FACCAT- | Professor/ Psychotherapist | Porto Alegre | Brazil | Rio Grande do Sul | View |
| Sim, Leslie | Mayo Clinic | Professor | Rochester | United States | Minnesota | View |
| Simeonova, Valeria | Private Practice | Counselor/Therapist | Varna | Bulgaria | Varna | View |
| Simister, Heather | St.Amant | Psychologist | Winnipeg | Canada | Manitoba | View |
| Simkins, Thomas | Private Practice | Psychologist | Amsterdam | Netherlands | | View |
| Simmons, Alexander | Great Lakes Psychology Group | Psychotherapist | Clarkston | United States | Michigan | View |
| Simmons, Amanda | Anxiety Solutions of Denver | Staff Psychologist | Denver | United States | Colorado | View |
| Simmons, Elizabeth | Loyola University Medical Center | Associate Professor | Chicago | United States | Illinois | View |
| Simmons, Kate | Upstream Counseling | Owner/Therapist | Ames | United States | Iowa | View |
| Simonich, Hugh | The Third Wave Center for Mindfulness and Behavior Therapy | Director | Austin | United States | Texas | View |
| Simons, Marion | Groeipunt, praktijk voor integratieve psychotherapie | sociaal pedagogisch hulpverlener/ psychotherapie | Hapert | Netherlands | Noord-Brabant | View |
| Simons, Patricia | Carpe Diem Counseling | Marriage & Family Therapist | Cross Junction | United States | Virginia | View |
| Simpson, Mr | British Psychological Society | Clinical Psychologist | Kendal | United Kingdom | Cumbria | View |
| Simpson, Peter | ahpra, aps | Psychologist | Manor Lakes | Australia | Victoria | View |
| Simpson, Tara | University of Alberta | Psychologist | Red Deer County | Canada | Alberta | View |
| Simsion, Daniel | Forensicare | Clinical Psychologist/ Lecturer | Clifton Hill | Australia | Victoria | View |
| Sinclair, Bethany | Private Practice | Psychotherapist | New York | United States | New York | View |
| Sinclair, Michael | City Psychology Group | Consultant Counselling Psychologist / Clinical Director | London | United Kingdom | | View |
| Sipe, Walter | UCSF | Dr | Oakland | United States | California | View |
| Siragusa, Tina | UNC Chapel Hill and private practice and Registered NC Gambling Tx Provider | Family Therapist and Addictions Counselor/NC and CT licenses | Chapel Hill | United States | North Carolina | View |
| Siri, Hossein | Islamic Azad University | Psychologist | Tehran | Iran, Islamic Republic of | Tehran | View |
| Sison, Alfred | Kaiser Permanente Hawaii | Clinical Psychologist | Honolulu | United States | Hawaii | View |
| Sisounong, Sabrina | Education Management Group | CEO | Fayetteville | United States | North Carolina | View |
| Sisti, Mark | NY Cognitive - Behavioral, PLLC | Psychologist & Director | NY | United States | New York | View |
| Sivonen, Mauri | ammattilainen | PSYCHOTHERAPIST | Joensuu | Finland | North Karelia | View |
| siwaletti, danielle | ACBS Brasil | psicólogo clínico | fortaleza | Brazil | Ceara | View |
| Skellie, Mark | PsyD | Northside Hospital | ATLANTA | United States | Georgia | View |
| Skeryte, Simona | Vytautas Magnus University | Psychologist | Vilnius | Lithuania | Vilniaus Apskritis | View |
| Skidmore, Terry | Psychotherapy Private Practice | Psychotherapist with own private practice | Bribie Island | Australia | Queensland | View |