Humboldt University (OKZ: 00)
- President / Vice-Presidents (OKZ: 0100)
- Academic Affairs (OKZ: 0210)
- Research Service Centre (OKZ: 0220)
- Technical Division (OKZ: 0250)
  Section A - Portfolio Management, Floor Space Management (OKZ: 0251)
  
  Section B - Object Management (OKZ: 0252)
  
  Section C - Construction Management / Building Projects (OKZ: 0253)
  
  Location Development and Building Construction Planning (OKZ: 025310)
  
  Special Engineering / Construction Maintenance and Investment- / Special Building Projects (OKZ: 025320)
  
  Heating-, Ventilation- , Plumbing Installations (OKZ: 025321)
  
  Electrical Installations (OKZ: 025322)
  
  Communication Installations (OKZ: 025323)
  
  Building Construction / Construction Maintenance and Investment Projects (OKZ: 025330)
  
  Building Construction / Special Building Projects (OKZ: 025340)
  
  Section F - Technical Service / Concierge (OKZ: 0254)
  
  Occupational safety, fire- and environmental protection (OKZ: 0255)
  
  Section G - Purchase (OKZ: 0257)
- Communication, Marketing, Event (OKZ: 0260)
- Planning and Management (OKZ: 0270)
- Quality Management Unit (OKZ: 0275)
- International Department (OKZ: 0280)
- Legal Department (OKZ: 0290)
- University Senate (OKZ: 0320)
- Academic Council (OKZ: 0340)
- Board of Trustees according to the Constitution of the Humboldt Universität zu Berlin (OKZ: 0350)
- Board of Trustees according to the Berlin Universities Act (OKZ: 0360)
- Central Election Board (OKZ: 0370)
- Employees' Representation (OKZ: 0380)
- Faculty of Law (OKZ: 10)
- Faculty of Life Sciences (OKZ: 21)
- Faculty of Mathematics and Natural Sciences (OKZ: 33)
- Faculty of Humanities (OKZ: 51)
- Faculty of Language, Literature and Humanities (OKZ: 52)
- Faculty of Humanities and Social Sciences (OKZ: 55)
- Faculty of Theology (OKZ: 60)
- Faculty of Economics and Business Administration (OKZ: 70)
- Center for the Science of Materials Berlin (OKZ: 81)
- Centre for British Studies (OKZ: 82)
- Central Institute Professional School of Education (OKZ: 83)
- Hermann von Helmholtz-Centre for Cultural Techniques (OKZ: 84)
- Integrative Research Institutes (OKZ: 85)
- Excellency Cluster (OKZ: 86)
- Humboldt Graduate School (OKZ: 87)
- Interdisciplinary Research Centres (OKZ: 88)
- Other Interdisciplinary Units (OKZ: 89)
- Central Unit - Language Centre (OKZ: 91)
- Central Unit - University Library (OKZ: 92)
- Central Unit - Computer and Media Service (OKZ: 93)
- Central Unit - Sport and Recreation (OKZ: 94)
- additional Central Institutes (OKZ: 96)
- Institutes "within" the Humboldt-Universität zu Berlin and Non-affiliated Units (OKZ: 99)