Departments are one of the basic organisational units of the Capital City of Warsaw Municipal Office and its activities encompass the area of the entire City of Warsaw (the borough). Departments are comprised of internal units, such as Offices, Groups, Representation Offices, as well as single and multi-person positions.

The work of the Departments is supervised by Directors.

The Capital City of Warsaw Municipal Office is comprised of the following Departments (links to Polish sites):

1. City Archives
2. Administration and Civil Service Department
3. Administrative Department
4. Architecture and City Planning Department
5. Audit Department
6. Crisis Management and Safety Department
7. Roads and Public Transportation Department
8. Business Activity and License Department
9. Education Department
10. European Funds Department
11. Cadastre and Geodesy Department
12. Real Estate Department
13. IT and Information Processing Department
14. Infrastructure Department
15. Human Resources Department
16. Internal Control Department 
17. Road Lane Reparations and Investment Coordination Department
18. Accounting and Countersignature Department
19. Culture Department
20. Ownership Supervision Department
21. Investors Service Department
22. Security Department
23. Environment Protection Department
24. Budget Planning Department
25. Taxation and Vindication Department
26. Debt Policy and Cash Management Department
27. Housing Policy Department
28. Social Policy Department
29. Health Policy Department
30. Legal Department
31. City Promotion Department
32. Warsaw City Council Department
33. City Development Department
34. Sports and Recreation Department
35. Heritage Protection Department
36. Public Procurement Department
37. Office of the Mayor
38. Euro 2012 Secretariat
39. Centre for Social Communication
40. City Registrar's Office