Sir Owen Thomas (18 December 1858 – 6 March 1923) was a Welsh politician who served as the Member of Parliament (MP) for Anglesey. Born on Anglesey, Thomas raised the Prince of Wales Light Horse regiment to serve in the Second Boer War. He commanded the regiment, and later became the Brigadier-General commanding the North Wales Brigade. He also served as chief officer of the Life-Saving Apparatus at Sea section of the Board of Trade, and in his spare time bred farm stock. He was knighted on 21 February 1917.