Richard Kidston Law, 1st Baron Coleraine, PC (27 February 1901 – 15 November 1980) was a British Conservative politician.

He was the youngest son among six children born to businessman and Conservative politician Bonar Law (who would go on to serve as Prime Minister of the United Kingdom from 1922 to 1923) and Law's wife, the former Annie Pitcairn Robley, a daughter of Harrington Robley, a merchant from Glasgow.

While in the latter post he took part in the Bermuda Conference on the fate of European Jewry[6] and was sworn of the Privy Council in the 1943 New Year Honours.

[9] After his elevation to the peerage, he went on a two-week lecture tour in the United States,[10] following two weeks in Russia at the invitation of the Russian government.

[11] In 1950, Law published Return from Utopia, a book in which he stated his belief that trying to use the power of the state to create any sort of Utopia is not just unattainable but positively evil, because one of the first principles to be sacrificed is the principle of freedom and individual choice.

Law argued: To turn our backs on Utopia, to see it for the sham and the delusion that it is, is the beginning of hope.

Lord Coleraine died on 15 November 1980, age 79, and was succeeded in the barony by his son James Martin Bonar Law.