| Name | Affiliation | Occupation / Position Title | City | Country | State | |
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| Picardo, Breno | Profesional | Psicólogo | Tacna | Peru | Tacna | View |
| Piccoli, Giovanna | Consultorio particular | Psicóloga clínica | Porto Alegre | Brazil | | View |
| Pickard, Abigail | none | Therapist | Brookhaven | United States | Georgia | View |
| Pierce, Charity | Rosie's Table: A Safe Space for Healing, LLC | Counselor and CEO | Baltimore | United States | Maryland | View |
| Piesman, Megan | Megan Piesman, PhD LLC | Clinical Psychologist | Englewood | United States | New Jersey | View |
| Pietarila, Katja | Private Therapist | Psychotherapist | Raahe | Finland | | View |
| Pietikäinen, Arto | KKT-keskus Arvo Tampere | psychotherapist | Orivesi | Finland | Tampere Region | View |
| Pietinen, Vappu | KKT-keskus Arvo Helsinki | Psychotherapist | Helsinki | Finland | | View |
| Pihl, Rebecca | Midwest Center | clinical social worker/psychotherapist | Saint Paul | United States | Minnesota | View |
| Pilecki, Brian | Portland Psychotherapy Clinic, Research, & Training Center | Psychologist | Portland | United States | Oregon | View |
| Piłat, Bartłomiej | ACBS Poland | Psychologist | Białystok, podlaskie | Poland | podlaskie | View |
| Pinkall, Tom | ACT therapist(teacher), Mindfulness (teacher-)trainer | Psychotherapist and Trainer | Mannheim | Germany | Baden-Württemberg | View |
| Piñol, Aroa | Contextual Psychology Center (COPSYCEN), Spain. | clinical psychologist | Zaragoza | Spain | Zaragoza | View |
| Pinto, Anna | Self -employed | Clinical Psychologist | | United Kingdom | | View |
| Pinto, Gislane | profissional | Psicóloga Clínica | Salvador | Brazil | Bahia | View |
| Pio, Susana | ACT Health | Psicologa | | Argentina | | View |
| Piper, Fleur | NZAC | Counsellor | Northcote | New Zealand | | View |
| Pires dos Santos, Pedro | Universidade Federal do Rio de Janeiro | Professor | Rio de Janeiro | Brazil | Rio de Janeiro | View |
| Pires, Daniela | self-employed | Psychologist and Journalist | Brasília | Brazil | Distrito Federal | View |
| PITANGA, ARTUR | CRP 09 | Professor Universitário | Anápolis | Brazil | Goias | View |
| Pitula, Clio | The Arete Center | Psychologist | Centennial | United States | Colorado | View |
| Pixley, Jill | N/A | Licensed Marriage and Family Therapist | San Francisco | United States | California | View |
| Pizzo, Ronald | Pink Larkin | Partner | Halifax | Canada | Nova Scotia | View |
| Place, James | Christian Counseling Associates of Western PA | Therapist | Erie | United States | Pennsylvania | View |
| Platenkamp, Christina | Jewish Community Free Clinic of Santa Rosa, CA, USA | Mental Health Counselor | Sacramento | United States | California | View |
| Plath, Louisette | Integrative Cognitive and Behavioral Services | Licensed Clinical Psychologist | De Soto | United States | Illinois | View |
| Platt, Melissa | Montefiore Medical Center | Attending Psychologist | Elmsford | United States | New York | View |
| Plazas, Laura | Práctica privada | Psicóloga clínica | Bogota | Colombia | Distrito Capital de Bogotá | View |
| Pliatsko, Uliana | self-employed | Psychologist | Lviv | Ukraine | L'vivs'ka Oblast' | View |
| Ploeg, Marja | Vereniging POH-GGZ | Coach / mental health social worker | Heukelum | Netherlands | Gelderland | View |
| Plosker, Rhea | Rhea Plosker Counselling and Psychotherapy | Psychotheraist | Toronto | Canada | Ontario | View |
| Plouffe, Keith | Kennebec Behavioral Health | Outpatient Clinician | Winthrop | United States | Maine | View |
| Pluijm, Sergio | Utrecht University | Coach, trainer, writer | Rotterdam | Netherlands | Zuid-Holland | View |
| PLUMAS, Constantin | Cabinet privé | Psychologue-Psychothérapeute | GRENOBLE | France | Isère | View |
| Plumb Vilardaga, Jennifer | JPV Contextual Consulting, PLLC | Licensed Psychologist | Carrboro | United States | North Carolina | View |
| Poe, Verna | Beyond Words Behavioral | BCBA | Edmond | United States | Oklahoma | View |
| Pohjasniemi, Heli | Tmi Heli Pohjasniemi | Psychotherapist | Turku | Finland | | View |
| Pohle, Jennifer | BACB | BCBa/ LABA ACT Therapist | Providence | United States | Rhode Island | View |
| Polanski, Thomas | Private Psychology Practice | Clinical Psychologist | Quito | Ecuador | Pichincha | View |
| Poley, Kevin | The Mind Spa | Licensed Professional Counselor | Morristown | United States | New Jersey | View |
| Pollack, Melissa | MHP Counseling, PLLC | LCSW | Northfield | United States | Illinois | View |
| Pollard, Richard | Valley Oaks Health | Therapist | Charlottesville | United States | Virginia | View |
| Pollay, Antje | work in my own practice | Psychotherapist | Frankfurt | Germany | | View |
| Połatyński, Juliusz | Centralny Szpital Kliniczny Uniwersytetu Medycznego w Łodzi | psychologist | Łódź | Poland | łódzkie | View |
| Ponce Japaze, Guillermo | Centro Integral de Psicoterapias Contextuales (CIPCO) | Licensed Psychologist. Psychoterapist. | Cordoba | Argentina | Cordoba | View |
| Ponce, Saul | ninguna | Terapeuta | León | Mexico | Guanajuato | View |
| Pontillo Michel, Cristin | Private Practice | clinical psychologist | | United States | New York | View |
| Pop, Mirela | Colegiul Psihologilor din România | Psychotherapist | Cluj-Napoca | Romania | Cluj | View |
| Pope, Joseph | Joseph Pope Counseling PLLC | Counselor | Matthews | United States | North Carolina | View |
| porta, zulma | CONSULTORIO | psicologa | roque perez | Argentina | Buenos Aires | View |