The Welsh Liberal Democrats (Welsh: Democratiaid Rhyddfrydol Cymru) is a liberal, federalist political party in Wales, part of UK Liberal Democrats. The party is led by Jane Dodds, who has served as an MS for Mid and West Wales since May 2021. The party currently has one elected member in the Senedd and one Welsh seat in the UK House of Commons. It also has several members of the House of Lords. The party had 69 local councillors serving in principal authorities as of the 2022 local authority elections, up 10 from 2017.
Mark Williams, then-Leader of the Welsh Liberal Democrats, was defeated at the 2017 general election in his Ceredigion constituency by Ben Lake of Plaid Cymru, whose majority of 104 made the seat one of the most marginal in the country.