Robin William Renwick, Baron Renwick of Clifton, KCMG (13 December 1937 – 4 November 2024) was a British diplomat, author and a member of the House of Lords who served as British ambassador to South Africa (1987−1991) and the United States (1991−1995).

[1][2] Born in Clifton, York, to Richard Renwick, a pharmacist, and Clarice Henderson, he won a scholarship to St Paul's School in London.

After completing his national service as a despatch rider in Malta and Libya, he studied at Jesus College, Cambridge (which made him an honorary fellow in 1992) and later at the Sorbonne in France.

[1][2] After a brief sabbatical at Harvard University in the United States, Renwick worked in the British embassy in Washington before returning to London in 1984 as assistant under-secretary for Europe at the time of Margaret Thatcher's negotiation of the British rebate in the budget of the European Economic Community.

He later served as the British ambassador to South Africa (1987−1991) during negotiations to end apartheid[3] and to the United States (1991−1995).