Program Organising Committee
| Santiago Arribas co-chair | CAB |
| Luis Colina Robledo co-chair | CAB |
| Macarena García Marín co-chair | ESA |
| Ismael Pérez Fournon co-chair | IAC |
| Raphael Shirley co-chair | IAC |
Contact the POC and the IAC LOC at: jwst2020@iac.es
IAC Local Organising Committee
| Eva Bejarano Padrón | IAC |
| Julia de León Cruz | IAC |
| Emma Esparza Borges | ULL |
| Stefan Geier | GRANTECAN |
| Camilo Jiménez Ángel | IAC |
| Ismael Pérez Fournon | IAC, co-chair |
| Jorge A. Pérez Prieto | IAC |
| Frederick Poidevin | IAC |
| Raphael Shirley | IAC, co-chair and LOC chair |
CAB Local Organising Committee
| Almudena Alonso Herrero | CAB |
| Santiago Arribas Mocoroa | CAB, co-chair |
| Cristina Catalán Torrecilla | CAB |
| Luis Colina Robledo | CAB, co-chair |
| Álvaro Labiano Ortega | CAB |
| Rui Marques Chaves | CAB |
| Javier Álvarez-Marquez | CAB |
| Michelle Perna | CAB |
| Pablo Perez Gonzalez | CAB |
| David Barrado Navascués | CAB |
| Bruno Rodríguez del Pino | CAB, co-chair and LOC chair |