The 1885 Denbighshire by-election was a parliamentary by-election held for the House of Commons constituency of Denbighshire in Wales on 27 May 1885.
The by-election was caused by the death of the sitting Conservative MP, Watkin Williams-Wynn on 9 May 1885.
The only candidate who nominated was Conservative Herbert Williams-Wynn, the nephew and son in law of Watkin Williams-Wynn[1] He was thus elected unopposed.