David Williams (30 June 1799 – 15 December 1869) was a Welsh Liberal Party politician who served for a short time as the Member of Parliament for the Merioneth constituency.
His younger sister, Margaret (1801–1879), was married to the Welsh preacher John Breese.
Williams suffered from ill health throughout his time as MP and only attended the Commons to vote on one occasion, for the passing of the Irish Church Disestablishment Bill.
[3] Williams died in December 1869 and was succeeded, after a by-election, by Samuel Holland.
Note* The Dictionary of Welsh Biography errs in citing a Margaret Williams as David's mother.