Hendrik Willem Schweickhardt, was an 18th-century painter from Germany.
He was born in Hamm and moved to The Hague where he became a pupil of Hieronymus Lapis and started a family. He moved to London in 1786 for economic reasons and did quite well there. His daughter Katharina learned to draw and paint and became a poet; she married Willem Bilderdijk after having an affair with him in 1795 when he taught her and her sisters in London. Schweickhardt died in London.