Claudius Ash (1792–1854) was an English goldsmith and dental manufacturer.
He married Sarah Butler on 11 March 1813 and had eight children, four of whom, along with other members of the Ash family and their descendants, were engaged in dental manufacturing or practised as dental surgeons.
Claudius Ash’s family were members of the Catholic Apostolic Church (Irvingites).
Ash’s teeth, made of porcelain mounted on gold plates, with gold springs and swivels, were considered superior both aesthetically and functionally and laid the foundation of his new enterprise as Britain’s foremost manufacturer of dentures and dental appliances.
Originally based in Broad Street (now Broadwick Street), London, the business expanded rapidly and by the mid-nineteenth century Claudius Ash dentures and dental equipment dominated the European market.