Following the establishment of formal diplomatic relations between Singapore and Thailand on 20 September 1965, the Singapore Embassy in Thailand was established in 1966.
The Embassy had a humble beginning working out of the office of its first Ambassador, Mr Tan Siak Kew, at the Four Seas Communications Bank before renting a house along North Sathorn Road (No. 90).
The Embassy moved into its permanent home at 129 South Sathorn Road, the heart of the Central Business District, in 1974.
On 24 November 2011, the Singapore Embassy was honoured to host a first-ever visit to the Embassy by Her Royal Highness Princess Maha Chakri Sirindhorn.
The Embassy is headed by Ambassador Extraordinary and Plenipotentiary, Her Excellency Catherine Wong, who is the 12th Head of Mission from Singapore accredited to Thailand.
The following have served as Singapore Ambassadors in Thailand:
| Mr Tan Siak Kew | Aug 1966 – Aug 1967 |
| Mr Ho Rih Hwa | Sep 1967 – Apr 1971 |
| Mr Chi Owyang | Aug 1971 – Mar 1988 |
| Mr Tan Seng Chye | Mar 1988 – Sep 1990 |
| BG Chin Siat Yoon | Sep 1990 – Dec 1994 |
| Mr Wong Kwok Pun | Jan 1995 – Dec 1998 |
| Mr Calvin Eu Mun Hoo | Jan 1999 – Dec 2001 |
| Mr Chan Heng Wing | Jan 2002 – Oct 2005 |
| Mr Peter Chan Jer Hing | Nov 2005 – Mar 2012 |
| Ms Chua Siew San | Mar 2012 – May 2019 |
| Mr Kevin Cheok | May 2019 – Sep 2023 |
| Ms Catherine Wong | Feb 2024 – present |
The Embassy of the Republic of Singapore
129 South Sathorn Road
Bangkok 10120
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