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Geneva WTO

Tan Hung Seng

Biographical summary of Mr Tan Hung Seng, Permanent Representative of the Republic of Singapore to the World Trade Organisation and the World Intellectual Property Organisation in Geneva.

Last updated 20 November 2025
Portrait photo of Mr Tan Hung Seng.

Ambassador Tan Hung Seng is the Permanent Representative of the Republic of Singapore to the World Trade Organisation and World Intellectual Property Organisation since February 2019. He joined the Ministry of Foreign Affairs in 1990, and served as Singapore’s Permanent Representative to ASEAN from August 2013 to January 2019, and Ambassador to the Arab Republic of Egypt, with concurrent accreditation to Libya, from July 2009 to July 2013. He was also concurrently accredited as Ambassador to the State of Kuwait until October 2012. 

Ambassador Tan’s other overseas postings included Embassy of the Republic of Singapore to Thailand in Bangkok, where he was Deputy Chief of Mission/Counsellor from 1999 to 2003; and two stints in Embassy of the Republic of Singapore to the Arab Republic of Egypt in Cairo as Deputy Chief of Mission from 2003 to 2005, and First Secretary from 1992 to 1995.

Ambassador Tan graduated from the National University of Singapore and did post-graduate studies at the University of London, School of Oriental and African Studies (SOAS), under the Raffles/Chevening Scholarship. He was awarded the Public Administration Medal (Silver) in 2011 and the Long Service Medal in 2013. He is married to Mrs Kayo Suzuki-Tan and they have two daughters.