Professor Dr Mark Lawrence has been a Scientific Director at the IASS since October 2011 and was originally responsible for the SIWA (Sustainable Interactions with the Atmosphere) Cluster and assumed the duties of Managing Scientific Director in December 2020.
Prof. Dr Ortwin Renn joined the IASS as Scientific Director in February 2016.
Until his retirement in September 2015, Professor Dr Klaus Töpfer was the Founding and Executive Director of the IASS. At the same time, he headed the GCS (Global Contract for Sustainability) Cluster.
Professor Dr Carlo Rubbia was a Scientific Director of the IASS from June 2010 to May 2015 with responsibility for the E³ (Earth, Energy and Environment) Cluster.
Both former directors maintain close ties with the IASS as Honorary Senior Fellows.
Jakob Meyer was an Administrative Director at the IASS from October 2017 to June 2022.