Management and Administration
| Department Head | Manfred KRAMMER |
| Deputy Department Head | Richard HAWKINGS |
| Deputy Department Head | Giovanna LEHMANN MIOTTO |
| Departmental Planning Officer (DPO) | Catherine DECOSSE |
| Assistant to the Department Head | Angela RICCI |
| Departmental Administrative Officer (DAO) | Florence RABIER |
| Departmental Safety Officer (DSO) | Olga BELTRAMELLO |
| Departmental Training Officer (DTO) | Nathalie KNOORS |
| Diversity and Inclusion Officer (DIO) | Adriana TELESCA |
| Human Resources Advisor (HRA) |
Benjamin SALIGNAT - back-up Jan VON DER BRELIE - back-up |
EP Groups structure
| EP-DI | Office of the Department Head |
| EP-AGS | Administration and General Services |
| LHC Experiments | |
|---|---|
| EP-AID, EP-AIO, EP-AIP | ALICE |
| EP-ADE, EP-ADO, EP-ADP, EP-ADT | ATLAS |
| EP-CMD, EP-CMG, EP-CMO, EP-CMT, EP-CMX | CMS |
| EP-LBC, EP-LBD, EP-LBO | LHCb |
| Non-LHC Experiments | |
| EP-NU | Neutrino Group |
| EP-SME | Small & Medium Experiments |
| EP-FCC | Future Circular Collider |
| Support groups | |
| EP-DT | Detector Technology |
| EP-ESE | Electronics Systems for Experiments |
| EP-SFT | Software Development for Experiments |
Users Groups
| EP-UAD | Antiproton Users |
| EP-UAI | ALICE Users |
| EP-UAT | ATLAS Users |
| EP-UC3 | CTF3 Users |
| EP-UCM | CMS Users |
| EP-UFC | FCC Collaboration Users |
| EP-UFT | Fixed Target Users |
| EP-UGC | General Collaboration Users |
| EP-UHC | Other LHC Users |
| EP-UIS | ISOLDE Users |
| EP-ULB | LHCb Users |
| EP-ULD | Linear Collider Detector Users |
| EP-UMC | Muon Collider Users |
| EP-UNT | n_TOF Users |
| EP-UNU | Neutrino Platform Users |
| EP-UOP | Other Physics Users |
| EP-URD | R&D Users |