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)
  
  Head of Department (OKZ: 512001)
  
  Sections / Chairs (OKZ: 512010)
  
  Ancient History I (OKZ: 512013)
  
  Ancient History II (OKZ: 512014)
  
  Medieval History (OKZ: 512016)
  
  European History of the Early Modern History (OKZ: 512017)
  
  History of South Eastern Europe (OKZ: 512022)
  
  History of Eastern Europe (OKZ: 512023)
  
  History of Western Europe and Transatlantic Relationships (OKZ: 512024)
  
  Medieval History and Regional History (OKZ: 512025)
  
  Social History (OKZ: 512026)
  
  History of Science Specializing in History of Education and Organisation of Knowledge in the 19th and 20th Century (OKZ: 512027)
  
  Computer Science of History (OKZ: 512032)
  
  European History of the 20th Century (OKZ: 512033)
  
  Modern and Contemporary History (OKZ: 512034)
  
  German History of the 20th Century (OKZ: 512035)
  
  Didactics of History (OKZ: 512036)
  
  History of Middle Ages, Focus on Early and High Middle Ages (OKZ: 512037)
  
  Social and Economic History (OKZ: 512038)
  
  European History of the 19th Century (OKZ: 512042)
  
  Historic European Studies (OKZ: 512045)
  
  Digital History (OKZ: 512046)
  
  Geschichte Europas 19. - 21. Jhd CMB (S) (OKZ: 512047)
  
  Europäische Geschichte des Spätmittelalters (OKZ: 512048)
  
  Collaborative Research Centres / Graduate Colleges / Honorary Academic Staff (OKZ: 512080)
  
  Contemporary History (with the Leibniz Centre for Contemporary History Potsdam) (OKZ: 514029)
  
  Department of European Ethnology (OKZ: 5130)
  
  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)