Humboldt University (OKZ: 00)
- President / Vice-Presidents (OKZ: 0100)
- Academic Affairs (OKZ: 0210)
- Research Service Centre (OKZ: 0220)
- Technical Division (OKZ: 0250)
- 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)
  Dean / Deputy Dean (OKZ: 3301)
  
  Faculty Management (OKZ: 3302)
  
  Department of Chemistry (OKZ: 3311)
  
  Department of Geography (OKZ: 3312)
  
  Head of Department (OKZ: 331201)
  
  Climate System and Water Regime in Global Changes (OKZ: 331213)
  
  Nature conservation and sustainable development (OKZ: 331214)
  
  Landscape Ecology and Biogeography (OKZ: 331215)
  
  Organic geochemistry of the Earth's surface system (S) (OKZ: 331216)
  
  Climate Geography (OKZ: 331217)
  
  Biogeography (OKZ: 331218)
  
  Sustainable Resources Management and Global Transformation (OKZ: 331219)
  
  Economic Geography (OKZ: 331221)
  
  Cultural and Social Geography (OKZ: 331222)
  
  Integrative Geography (OKZ: 331223)
  
  Geography of Gender in Human-Environment Systems (J) (OKZ: 331224)
  
  Applied Geography / Urban and Regional Planning (OKZ: 331225)
  
  Aquatic Ecogeography (OKZ: 331226)
  
  Applied Economic Geography (OKZ: 331227)
  
  Polar Geography with a Focus on Global Change in Arctic Human-Environment Systems (OKZ: 331228)
  
  Urban mobility (OKZ: 331229)
  
  Earth Observation (OKZ: 331231)
  
  Applied GIScience (OKZ: 331234)
  
  Didactics of Geography (OKZ: 331241)
  
  Traffic Geography (OKZ: 331252)
  
  Geographical Information Management and Visualization (OKZ: 331254)
  
  Human geography with a focus on spatial social science infrastrukture research (OKZ: 331255)
  
  Alexander von Humboldt Chair in Sustainability Science (OKZ: 331256)
  
  Ecohydrology (OKZ: 331257)
  
  Hydrology and Society (OKZ: 331258)
  
  Resilient urban landscapes (OKZ: 331259)
  
  Collaborative Research Centres / Graduate Colleges / Honorary Academic Staff (OKZ: 331280)
  
  Department of Computer Science (OKZ: 3313)
  
  Department of Mathematics (OKZ: 3314)
  
  Department of Physics (OKZ: 3315)
- 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)