Percy Daines (29 November 1902 – 3 March 1957) was a British insurance agent and politician. He served as a Labour and Co-operative Party Member of Parliament for East Ham North from the 1945 general election until his death, and was on the national committee of the Co-operative Party. He was known for his opposition to Communism, and was described as "one of the most powerful back-benchers in the Labour Party".