Kantathi Suphamongkhon (Thai กันตธีร์ ศุภมงคล, born 3 April 1952), a Thai diplomat, politician, university professor and a real estate developer. He served as foreign minister of Thailand during the administration of Prime Minister Thaksin Shinawatra from 11 March 2005 until the military coup d'état on 19 September 2006. In that capacity, he also served as chairman of the Human Security Network, established in 1999 as an association of countries working to promote the concept of human security as a feature of national and international public policy.