Roelof Koets, or Coets (1655 - 1725), was an 18th-century painter from the Northern Netherlands.
He was born in Zwolle as the son of Andries Koets and is known as a portrait painter and the teacher of the miniature painter Herman Wolters, the husband of Henriëtta van Pee.[1] According to his biographer Johan van Gool, he had been a pupil of Gerard ter Borch and painted upwards of 5000 portraits of various gentry in Friesland and Overijssel, including portraits of the family of Hendrik Casimir.[2] Though sometimes still life paintings are attributed to him, most of these are by an earlier Roelof Koets, who could possibly have been his descendant.He died in Zwolle.