Leonard Knyff (Leendert Knijff; August 10, 1650 - April 1722) was a Dutch artist active in England in the late seventeenth and early eighteenth centuries. He is best known for his collaboration with Johannes Kip, producing views of country houses and their formal gardens for their Britannia Illustrata. He was born in Haarlem to painter Wouter Knijff and was taught by his father. He relocated to London in 1681, which would become his home until his death.