Royal Leerdam Crystal (also known as Royal Leerdam) was a Dutch producer of glassware products based in Leerdam, the Netherlands. It was established in 1878 as a department within a glassware producing factory, , itself founded in 1765. From 1938 until 2002 it was part of the Schiedam-based Vereenigde Glasfabrieken. In 2002, the factory became part of the American glass and tableware company Libbey Inc. In 2008, Royal Leerdam was purchased by De Koninklijke Porceleyne Fles, becoming part of the Royal Delt Group. In September 2020, as a result of the COVID-19 pandemic, the glass-making facilities were shut.