- HP Information Security UK Limited
- Hack All The Things
- Halmstad University
- Hamad Bin Khalifa University [Doha, Qatar]
- Hamburg University of Technology
- Hans-Bredow-Institut for Media Research
- Hanyang University
- Harbin Engineering University
- Harbin Institute of Technology
- Harvard University
- Hasso Plattner Institute (HPI)
- Hasso Plattner Institute [Potsdam, Germany]
- Haute École Spécialisée de Suisse Occidentale Valais-Wallis
- Heidelberg Institute for Theoretical Studies
- Heinrich Heine Universität Düsseldorf = Heinrich Heine University [Düsseldorf]
- Hellenic Air Force Academy
- Helmut Schmidt University, University of the Armed Forces Hamburg
- Helsingin yliopisto = Helsingfors universitet = University of Helsinki
- Helsinki Institute for Information Technology
- Helwan University [Caire]
- Heriot-Watt University [Edinburgh]
- Heuristique et Diagnostic des Systèmes Complexes [Compiègne]
- Hewlett Packard Enterprise (Hewlett Packard)
- Hewlett Packard Labs [Bristol]
- Hewlett Packard Research Labs
- Hewlett-Packard
- Hewlett-Packard Laboratories [Bangalore]
- Hewlett-Packard Laboratories [Bristol]
- Higher communications school of Tunis
- Hiroshima University
- Ho Chi Minh City University of Science
- Hochschule Bonn Rhein-Sieg University of Applied Sciences [Sankt Augustin]
- Hochschule Darmstadt
- Hochschule Worms University of Applied Sciences
- Hochschule für Technik Stuttgart
- Hokkaido Institute of Technology
- Hokkaido University [Sapporo, Japan]
- Honeywell Automation and Control Solutions Labs [Golden Valley]
- Honeywell Defense & Space Electronic Systems-Albuquerque Operation [Albuquerque]
- Horst Gortz Institute for IT Security
- Houston Baptist University
- Howard University
- Huawei Research Center [Munich]
- Huawei Technologies Co., Ltd [Shenzhen]
- Huawei Technologies [Dusseldorf]
- Huawei Technologies [Shanghaï]
- Huazhong University of Science and Technology [Wuhan]
- Hubei Police University [Wuhan]
- Hubert Burda Media Holding Kommanditgesellschaft [Munich]
- Human Centered Multimedia [Augsburg]
- Humboldt-Universität zu Berlin = Humboldt University of Berlin = Université Humboldt de Berlin
- Hunter College [CUNY, New York]