Sinnathamby Rajaratnam, better known as S. Rajaratnam, was a Singaporean statesman, journalist and diplomat who served as the first Minister for Foreign Affairs between 1965 and 1980, and 2nd Deputy Prime Minister of Singapore between 1980 and 1985. Rajaratnam is widely recognised as one of the founding fathers of Singapore. He was also one of the founders of the People's Action Party (PAP), which has governed the country continuously since independence.

Singapore's Ministry of Foreign Affairs (MFA) Malay: Kementerian Ehwal Luar Negeri; Chinese: 新加坡外交部; Tamil: வெளியுறவு அமைச்சு) is in charge of the country's foreign relations, as well as handling matters and providing consular assistance related to overseas Singaporean citizens. It was established on 9 August 1965. A ministry for the Government of Singapore, it is also responsible for conducting and managing diplomatic relations between Singapore and other countries and regions.