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)
  
  Department of Computer Science (OKZ: 3313)
  
  Department of Mathematics (OKZ: 3314)
  
  Head of Department (OKZ: 331401)
  
  Algebra (OKZ: 331411)
  
  Algebraic Geometry I (OKZ: 331414)
  
  Geometry and Topology (OKZ: 331415)
  
  Differential Gemetry and Global Analysis (OKZ: 331416)
  
  Algebra / Number Theory (OKZ: 331419)
  
  Geometrical Analysis (OKZ: 331423)
  
  Analysis II (OKZ: 331424)
  
  Algebra and Number Theory (OKZ: 331425)
  
  Mathematical Physics of Space, Time and Matter (OKZ: 331426)
  
  Mathematical Physics (OKZ: 331427)
  
  Mathematical Physics: Mathematical Aspects of Quantum Field and String Theory (OKZ: 331428)
  
  Applied Analysis (OKZ: 331431)
  
  Applied Mathematics with Focus on Optimisation of Complex Systems (OKZ: 331437)
  
  Applied Mathematics (OKZ: 331438)
  
  Applied Mathematics (OKZ: 331439)
  
  Interdisciplinary Mathematics (OKZ: 331452)
  
  Mathematical Statistics (OKZ: 331454)
  
  Stochastic Analysis and Stochastic Finance (OKZ: 331455)
  
  Applied Mathematical Finance (OKZ: 331456)
  
  Applied Stochastic Analysis (OKZ: 331458)
  
  Stochastics (OKZ: 331459)
  
  Mathematics and Didactics (OKZ: 331461)
  
  Didactics of Mathematics (OKZ: 331462)
  
  Applied Statistics (OKZ: 331472)
  
  Numerical Handling of Differential Equations (OKZ: 331474)
  
  Partial Differential Equations (OKZ: 331475)
  
  Mathematical Optimization (OKZ: 331476)
  
  Non smooth optimization (OKZ: 331477)
  
  Technical Support and Services (OKZ: 331490)
  
  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)