David Wain Chadwick (born 1991 or 1992[1]) is a British politician who has been the Liberal Democrat Member of Parliament for Brecon, Radnor and Cwm Tawe since the 2024 UK general election.

Chadwick currently sits on the Liberal Democrat frontbench team as their Spokesman for Wales.

When in 2014, he decided to move his studies to Argentina, he had yellow fever vaccination which triggered a rare condition called Guillain-Barré syndrome.

[1] In 2017, Chadwick attended St Cross College, Oxford, where he studied a master's degree in European History.

[5] He was selected to stand for the Brecon, Radnor and Cwm Tawe in 2024 UK general election in 2022.