Sir Herbert Lloyd Watkin Williams-Wynn, 7th Baronet (6 June 1860 – 24 May 1944) was a Welsh politician.
He succeeded to the baronetcy on the death of his uncle and father-in-law, Sir Watkin Williams-Wynn, 6th Baronet in 1885.
He was Member of Parliament (MP) for Denbighshire from May to November 1885 and was appointed as High Sheriff of Denbighshire for 1890.
He had married his cousin Louisa Alexandra Williams-Wynn, the sole heiress of the Wynnstay estate. During World War I he established a munitions factory on the estate.
He was succeeded by his son, Sir Watkin Williams-Wynn), 8th Baronet.
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