Gerrit Thomas Rietveld (Dutch pronunciation: [ˈɣɛrɪt ˈtoːmɑs ˈritfɛlt]; 24 June 1888–25 June 1964) was a Dutch furniture designer and architect. One of the principal members of the Dutch artistic movement called De Stijl, Rietveld is famous for his Red and Blue Chair and for the Rietveld Schröder House, which is a UNESCO World Heritage Site.