Elizabeth "Buffy" Williams (born 1 November 1976) is a Welsh politician who is the Labour Member of the Senedd for Rhondda.

Other campaigns she has been involved with include saving the local A&E in the Royal Glamorgan Hospital from a closure proposed by her own party, and helping in response to the floods caused by Storm Dennis.

[2] The Welsh Conservatives asked whether it was appropriate "for the first minister to be seen to be using the prestigious St David Awards to reward his Labour election candidates.

"[2] Williams won the Rhondda constituency seat on 6 May 2021 from the former Plaid Cymru leader, Leanne Wood, with a majority of 5,497.

[4][5] In February 2025 during a trial at Merthyr Tydfil, it emerged that a member of staff from Ms Williams’ office had made a complaint to the Police that resulted in a former Royal Marine Commando, Jamie Michael, being charged and prosecuted for inciting racial hatred.Court records show Michael was held on remand, provoking responses from The Free Speech Union (FSU) and Change.Org.