Humboldt University (OKZ: 00)
- President / Vice-Presidents (OKZ: 0100)
- 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)
  Dean / Deputy Dean (OKZ: 5101)
  
  Faculty Management (OKZ: 5102)
  
  Administrative Bodies and Committees (OKZ: 5103)
  
  Department of Philosophy (OKZ: 5110)
  
  Department of History (OKZ: 5120)
  
  Department of European Ethnology (OKZ: 5130)
  
  Head of Department (OKZ: 513001)
  
  Sections / Chairs (OKZ: 513010)
  
  additional Scientific Units (OKZ: 513020)
  
  Anthropology of post-fossil Societies (S) (OKZ: 513035)
  
  Science, Technology, and Planetary Geopolitics (S) (OKZ: 513036)
  
  European Ethnology / Social and Cultural Anthropology (OKZ: 513037)
  
  Collaborative Research Centres / Graduate Colleges / Honorary Academic Staff (OKZ: 513080)
  
  Graduate Colleges - Participations (OKZ: 513084)
  
  Research Groups (OKZ: 513086)
  
  Department of Library and Information Science (OKZ: 5140)
- 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)