Willem Hendrickszoon de Keyser (1603 – after 1680) was a Dutch Golden Age architect and sculptor primarily active in Amsterdam and London. He designed the in Amsterdam and the in Heerenveen, among others. Both buildings have attained rijksmonument status. He also sculpted reliefs for Amsterdam's new town hall (now the Royal Palace) and for the monumental tombs of the Dutch naval heroes Maarten Tromp, Michiel de Ruyter, and Jan van Galen. The relief adorning Tromp's tomb depicts the Battle of Scheveningen.