Ernest Claude Meysey-Thompson (18 February 1859 – 28 February 1944) was a British Army officer and Liberal Unionist Party (later Conservative Party) politician. He sat in the House of Commons from 1906 to 1922 as the Member of Parliament (MP) for Handsworth.
Meysey-Thompson was the sixth son of Sir Henry Meysey-Thompson (later 1st Baron Knaresborough) and his wife Elizabeth, the daughter of Sir John Croft, Bt. He was educated at Eton College and at Trinity College, Cambridge. He joined the army, becoming an officer in the Yorkshire Hussars in 1894, and was promoted to the rank of Captain on 21 May 1902.
In 1894, he married Alice Joicey, the daughter of John Joicey, a coalmine-owner and former MP from County Durham.
At the 1900 general election, he contested the Buckrose division of the East Riding, where he lost by 91 votes (1.2%) to the Liberal candidate Luke White.
However, his father retired from the Commons at the Dissolution of Parliament in January 1906, was raised to the peerage as Baron Knaresborough. As a member of the House of Lords he was disqualified from the House of Commons. At the general election later that month, Ernest stood for his father's old constituency of Handsworth in Staffordshire. He held the seat with a majority of 4,771 votes (21.6%) over his Liberal Party opponent Herbert Leon, a former MP for Buckingham. He was re-elected at both the January and December elections in 1910.