Ioan Lyonel Evans (10 July 1927 – 10 February 1984) was a British politician. He served as a Labour Co-operative Member of Parliament (MP) from 1964 to 1970 and from 1974 until his death.
Ioan Evans was born in Llanelli, the son of Evan Evans, a builder and clerk of works and his wife. He was educated at Llanelli Grammar School and the University College of Wales, Swansea. He served on the West Bromwich education committee and acted as the Labour agent for the general elections in 1955 and 1959 in the Birmingham Small Heath constituency. He was secretary of Birmingham and District Co-operative Party.
Evans was first elected to Parliament in the 1964 general election for the constituency of Birmingham Yardley. From 2 May 1966 to 26 September 1966, Evans was a substitute member of the Parliamentary Assembly of the Council of Europe. From 1968 to 1970 he was Comptroller of the Household in the Wilson Government. Evans lost his seat in the 1970 general election to Conservative Derek Coombs.