The steering committee is a strategic and decision-making authority. It insures the following functions:
- approves the global strategy
- validates the annual budget
- draws up the list of representatives of the International Scientific Council (ISC) proposed by the executive committee
- receives advice from the CSI
The composition of the steering committee of Labex DigiCosme is as follows:
| Etablissement | Titulaire | Suppléant |
| CEA | Patricia Roussel-Chomaz | Jean-Noël Patillon |
| CentraleSupelec | Olivier Gicquel | Silviu Niculescu |
| CNRS | Adeline Nazarenko | François Yvon |
| Dept STIC | Michel Beaudouin Lafon | |
| ENS Paris Saclay | Keitaro Nakatani | |
| ENSTA | David Filliat | Alexandre Chapoutot |
| Inria | Jean-Yves Berthou | Sylvie Boldo |
| Institut Mines-Telecom | Talel Abdessalem | Wallid Benameur |
| Polytechnique | Mireille Régnier | Eric Goubault |
| Université Paris-Sud | Etienne Augé | |
| UVSQ | Louis Goubin | Devan Sohier |
| Paris Saclay | Michel Vidal |
- participants are nominated by institutions
- the scientific coordinator participates as a permanent guest