The PROMETHEUS External Ethics Committee meet once a year with the aim to discuss all the ethic aspects of the project from the implementation and the management to the scientific results and their exploitation and dissemination.
| Name | Function / Institution | Country |
| BAERISWYL Bruno | Privacy commissionner - Canton of Zürich | Switzerland |
| FAROUKI Nayla | Philosopher and historian of Sciences | France |
| LOBET-MARIS Claire | Sociologist - University of Namur | Belgium |