On recommendation of the Board of Directors, outgoing Members of the Board who have made outstanding contributions to international cooperation in the peaceful uses of outer space, or to the development of space law, and who have served for several succeeding terms and have contributed substantially to the work of the Institute, may be elected for life as Honorary Directors by the General Assembly. Honorary Directors are not Members of the Board but may attend the meetings of the Board of Directors as observers and provide consultation on matters relating to the management of the Institute.
- Prof. Dr Karl-Heinz Boeckstiegel (Germany)
- Dr Stephen E. Doyle (United States)
- Prof. Jonathan Galloway (United States)
- Dr Peter Jankowitsch (Austria)
- Prof. Toshio Kosuge (Japan)
- Prof. Francis Lyall (United Kingdom)
- Prof. Jose Monserrat, Filho (Brazil)
- Dr Sylvia Ospina (Colombia)
- H.E. Judge Vladlen S. Vereshchetin (Russia)
- Amb. Eugeniusz Wyzner (Poland)
- Prof. Sergio Marchisio (Italy)
- Prof. Dr. Dr. h.c. Stephan Hobe (Germany)
- Mr. K.R. Sridhara Murthi (India)