Humboldt University (OKZ: 00)
- President / Vice-Presidents (OKZ: 0100)
  Equal Opportunities Office (OKZ: 010010)
  
  Data Protection Officer (OKZ: 010020)
  
  Chief of Staff's Office (OKZ: 0101)
  
  Vice-President for Research (OKZ: 0120)
  
  Vice-President for Finance / Personnel and Technical Matters (OKZ: 0140)
  
  Internal Revision (OKZ: 01400a)
  
  Humboldt gemeinsam Programm (OKZ: 01400c)
  
  ERP process (OKZ: 01400d)
  
  Finance Division (OKZ: 0230)
  
  Personal Office for Civil Servants (OKZ: 0231)
  
  Personal Office for Employees (OKZ: 0232)
  
  Section of Personnel Management (OKZ: 0233)
  
  Section of Salaries (OKZ: 0234)
  
  Section of Human Resource Development (OKZ: 0235)
  
  Special personnel matters (OKZ: 0237)
  
  Staff Service (OKZ: 0238)
  
  Section of Budget (OKZ: 0241)
  
  Payment Section (OKZ: 0242)
  
  Vice President for Academic Affairs (OKZ: 0160)
- University Administration (OKZ: 02)
- Administrative Bodies and Committees (OKZ: 03)
- 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)