| B&A-Buildings & Airports | CRIO-Central Region Inspection Office | FE&T-Finance Establishment & Taxation | JJM-Jal Jeevan Mission | NRPO-Northern Region Project Office | RP-Rail Projects | UE-Urban Engineering | RE-Railway Electrification |
| BLD-Buildings | CS-Company Secretary | Fin-Corporate Finance | LS-Leasing Services | O&M-Operation & Maintenance Services | S&CC-Strategy & Corporate Communication | UE&S-Urban Engineering & Sustainability | |
| BD-Buisness Development | CSR-Corporate Social Responsibility | GM-Green Mobility | MEA-Ministry of External Affairs | P&RES-Projects & Railway Equipment Services | SD-Station Development | UI-Urban Infrastructure | |
| C&E-Concurrence & Expotech | CSO-Chief Strategy Officer | HR-Human Resources | MMLP-Multi Modal Logistic Park | PE-Project Execution | SRIO-Southern Region Inspection Office | WRIO-Western Region Inspection Office | |
| CED-Civil Engineering Design | ECRPO-East Coast Region Project Office | HW-Highway | MU-Metro Unit | PU-Project Unit | SRPO-Southern Region Project Office | WRPO-Western Region Project Office | |
| CPC-Contract Policy Cell | ERIO-Eastern Region Inspection Office | ICP-Integrated Check Post | NERPO-North Eastern Region Project Office | QA-Quality Assurance | T&S-Track & Survey | WWay-Waterways | |
| CPO-Chief People Officer | ERPO-Eastern Region Project Office | IT-Information Technology | NRIO-Northern Region Inspection Office | RES-Railway Equipment Services | TS-Technical Services | RI-Rail Infrastructure |
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