Thomas Greminger

Thomas Greminger
Born (1961-04-22) 22 April 1961
Lucerne, Switzerland
OccupationDiplomat
Known forFormer Secretary-general for the Organization for Security and Co-operation in Europe (OSCE)

Thomas Greminger (born 22 April 1961 in Lucerne) is a Swiss diplomat. He served as Secretary-General for the Organization for Security and Co-operation in Europe (OSCE) from July 2017 to July 2020. Since May 2021, he has been the Director of the Geneva Centre for Security Policy (GCSP). He is a general staff officer in the Swiss army (lieutenant colonel).