Faculty from Italian institutions
| Professor | Institution |
| Leonardo Bargigli | University of Florence |
| Stefano Bartolini | University of Siena |
| Marcello Basili | University of Siena |
| Pietro Battiston | University of Pisa |
| Filippo Belloc | University of Siena |
| Salvatore Bimonte | University of Siena |
| Leonardo Boncinelli | University of Florence |
| Paolo Brunori | University of Florence |
| Gabriele Cappelli | University of Siena |
| Andrea Caravaggio | University of Siena |
| Valerio Cerretano | University of Florence |
| Stefano Clò | University of Florence |
| Fulvio Corsi | University of Pisa |
| Lorenzo Corsini | University of Pisa |
| Federico Crudu | University of Siena |
| Guiliano Curatola | University of Siena |
| Simone D’Alessandro | University of Pisa |
| Massimo D’Antoni | University of Siena |
| Francesca Dal Degan | University of Pisa |
| Alberto Dalmazzo | University of Siena |
| Marwil Davila-Fernandez | University of Siena |
| Paolo Di Martino | University of Turin |
| Giovanna Dinverno | University of Pisa |
| Nicola Doni | University of Florence |
| Davide Fiaschi | University of Pisa |
| Lapo Filistrucchi | University of Florence |
| Sara Franceschi | University of Siena |
| Chiara Franco | University of Siena |
| Francesca Gagliardi | University of Siena |
| Caterina Ciannetti | University of Pisa |
| Nicola Giocoli | University of Pisa |
| Alessandro Gioffre’ | University of Florence |
| Elisa Giuliani’ | University of Pisa |
| Michele Gori | University of Florence |
| Pietro Guarnieri | University of Pisa |
| Marco Guidi | University of Pisa |
| Francesco Guidi Bruscoli | University of Florence |
| Annalisa Luporini | University of Florence |
| Antonio Magliulo | University of Florence |
| Alice Martini | University of Florence |
| Piero Mazzarisi | University of Siena |
| Nicola Meccheri | University of Pisa |
| Domenico Menicucci | University of Florence |
| Alessio Muscillo | Universitas Mercatorum |
| Alessandro Palandri | University of Florence |
| Angela Parenti | University of Pisa |
| Riccardo Pariboni | University of Siena |
| Pierpaolo Parrotta | University of Siena |
| Paolo Pin | University of Siena |
| Valeria Pinchera | University of Pisa |
| Caterina Pisani | University of Siena |
| Tiziano Razzolini | University of Siena |
| Giorgio Ricchiuti | University of Florence |
| Leonardo Ridolfi | University of Siena |
| Maria Rossi | University of Chieti-Pescara |
| Alessandro Rubino | University of Bari |
| Laura Sabani | University of Florence |
| Luciano Segreto | University of Florence |
| Serena Sordi | University of Siena |
| Luca Spataro | University of Pisa |
| Marco Stimolo | University of Siena |
| Alessandro Tampieri | University of Florence |
| Silvia Tiezzi | University of Siena |
| Vincenzo Valori | University of Florence |
| Michelangelo Vasta | University of Siena |
| Cecilia Vergari | University of Pisa |
| Carlo Zappia | University of Siena |
Emeritus Faculty or board members from non-Italian institutions
| Professor | Institution |
| Samuel Bowless | Santa Fe Institute |
| Gabriel Burdin | University of Leeds |
| Giovanni Federico | New York University |
| Francesca Gagliardi | University of Hertfordshire |
| Roberto Galbiati | Sciences Po & CNRS |
| Geoffrey Hodgson | University of Hertfordshire |
| Steffen Hoernig | University of Nova Lisbon |
| Heinz Kurz | University of Graz |
| Patrizio Piraino | University of Notre Dame |
| Paul Sharp | University of Southern Denmark |
| Roberto Veneziani | Queen Mary University |
| Skerdilajda Zanaj | University of Luxembourg |
| Ugo Pagano | University of Siena |
| Neri Salvadori | University of Pisa |
The full composition of the PhD Board approved for the academic years 2024-2027 and signed by the President of the University of Siena can be found here.