The high commissioner of the United Kingdom to the Republic of Singapore is the United Kingdom's foremost diplomatic representative in Singapore.

Singapore, previously a British colony, became an internally self-governing state in 1959 and George Douglas-Hamilton, 10th Earl of Selkirk, was appointed commissioner (not high commissioner) for Singapore and South East Asia.^[1][2][3] In 1963, Singapore declared independence from Britain and joined the new Federation of Malaysia. In 1965, Singapore left Malaysia and became an independent country (as the Republic of Singapore) and a full member of the Commonwealth. As a member of the Commonwealth, the United Kingdom's diplomatic representative is a high commissioner rather than an ambassador.

The British High Commission is located at Tanglin Road, close to the Australian High Commission and American Embassy.

• 1959: Sir William Goode. Colonial Secretary (1953–57), Last Governor of Singapore (1957–59) . He was appointed Commissioner as part of transitional arrangements.
• 1959–1963: Earl of Selkirk

1963–1965: Singapore united with Malaysia

• 1965–1967: John Vernon Rob^[4]
• 1968–1970: Sir Arthur de la Mare^[5]
• 1970–1974: Sir Sam Falle^[6]
• 1974–1978: Peter Tripp^[7]
• 1978–1982: John Dunn Hennings^[8]
• 1982–1985: Sir Peter Moon^[9]
• 1985–1987: Sir Hamilton Whyte^[10]
• 1987–1990: Sir Michael Pike^[11]
• 1990–1997: Gordon Duggan^[12]
• 1997–2001: Alan Hunt^[13]
• 2001–2002: Sir Stephen Brown^[14]
• 2003–2007: Sir Alan Collins^[15]
• 2007–2011: Paul Madden^[16]
• 2011–2015: Antony Phillipson^[17]
• 2015–2019: Scott Wightman^[18][19]
• 2019–present^[update]: Kara Owen^[20]
• From July 2024: Nikesh Mehta^[21]