Ronald John McNeill, 1st Baron Cushendun, PC (30 April 1861 – 12 October 1934), was a British Conservative politician and writer.

[2] Having unsuccessfully contested the seats of West Aberdeenshire (1906), Aberdeen South (1907 and Jan. 1910) and Kirkcudbrightshire (Dec. 1910), McNeill was elected as Unionist Member of Parliament for the St Augustine's division of Kent in 1911.

Seven years later he became representative for Canterbury and in 1922 was appointed Under-Secretary of State for Foreign Affairs, a post he held, with a short interval for the first Labour Government of 1924, until 1925.

[3] Acting Foreign Secretary in 1928 and twice chief British representative to the League of Nations, Lord Cushendun signed the Kellogg-Briand Pact in August that year.

[5] They had three daughters: Esther Rose, Loveday Violet, and Mary Morvenna Bolitho (who married Major Philip Le Grand Gribble, military correspondent and memoirist).