Christopher Murray Grieve, known by his pen name Hugh MacDiarmid (11 August 1892 – 9 September 1978) was a Scottish poet.

. After leaving school in 1910, he worked as a journalist for five years, before serving in the Royal Army Medical Corps in Salonica, Greece and France during the First World War. After the war, he married and returned to journalism.

He was instrumental in creating a Scottish version of modernism and was a leading light in the Scottish Renaissance of the 20th century. Unusually for a first generation modernist, he was a communist; unusually for a communist, he was a committed Scottish nationalist. He wrote both in English and in literary Scots (often referred to as Lallans).

In 2010, letters were discovered showing that he believed a Nazi invasion of Britain would benefit Scotland. In a letter sent from Whalsay, Shetland, in April 1941, he wrote: “On balance I regard the Axis powers, tho’ more violently evil for the time being, less dangerous than our own government in the long run and indistinguishable in purpose." A year earlier, in June 1940, he wrote: “Although the Germans are appalling enough, they cannot win, but the British and French bourgeoisie can and they are a far greater enemy. If the Germans win they could not hold their gain for long, but if the French and British win it will be infinitely more difficult to get rid of them.”