Humboldt University (OKZ: 00)
- President / Vice-Presidents (OKZ: 0100)
- University Administration (OKZ: 02)
  University Administration (OKZ: 0200)
  
  Academic Affairs (OKZ: 0210)
  
  Research Service Centre (OKZ: 0220)
  
  Technical Division (OKZ: 0250)
  
  Section A - Portfolio Management, Floor Space Management (OKZ: 0251)
  
  Section B - Object Management (OKZ: 0252)
  
  Section C - Construction Management / Building Projects (OKZ: 0253)
  
  Section F - Technical Service / Concierge (OKZ: 0254)
  
  Central Building Control System (Master and Team), Measurement and Control Engineering, Telecommunication Install. and Services (OKZ: 025409)
  
  Copying Service (OKZ: 025410)
  
  Central Building Control System, Measurement and Control Engineering, Telecommunication Install. and Services (OKZ: 025411)
  
  Heating-, Ventilation- , Plumbing Installations - Main Building / Campus South / Adlershof (OKZ: 025412)
  
  Heating-, Ventilation- , Plumbing Installations - North / Dahlem (OKZ: 025413)
  
  Electrical Installations - Main Building / Campus South / Dahlem (OKZ: 025414)
  
  Electrical Installations - Campus North / Adlershof (OKZ: 025415)
  
  Closure Installations / Lift Plants (OKZ: 025416)
  
  Training Workshop Fine Mechanics (OKZ: 025417)
  
  Post Service (OKZ: 025418)
  
  Service Stations (OKZ: 025420)
  
  Transport- / Moving Services (OKZ: 025430)
  
  Guest House (OKZ: 025440)
  
  Media Service for Teaching and Events (OKZ: 025450)
  
  Referat VD - Arbeits-, Brand- und Umweltschutz (OKZ: 0255)
  
  Section G - Purchase (OKZ: 0257)
  
  Communication, Marketing, Event (OKZ: 0260)
  
  Planning and Management (OKZ: 0270)
  
  International Department (OKZ: 0280)
  
  Legal Department (OKZ: 0290)
  
  Quality Management Unit (OKZ: 0275)
- 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)