Gwenda Thomas (born 22 January 1942 in Neath) is a Welsh Labour politician. Thomas was first elected to the National Assembly for Wales in 1999 and re-elected in 2003, having almost doubled her majority. She is a fluent Welsh speaker. She is a member of the GMB Union. She was re-elected as Welsh Labour's Assembly Member for Neath on 3 May 2007 for a third 4-year term in office, with a majority reduced from 4,946 to 1,944, and a loss of 398 votes from the 2003 Assembly election. In the 2011 Assembly election, Thomas increased her majority to 6,390.