Cornelis van der Voort or van der Voorde (c. 1576 – buried on 2 November 1624) was a Dutch portrait painter, art collector, art appraiser and art dealer from the early 17th century who was active in Amsterdam.[1] He painted individual portraits as well as group portraits including schuttersstukken depicting local militia members and regentenstukken depicting regents of charitable institutions, a genre of which van der Voort was the inventor.[2][3] He played an important role in the development of portrait painting in the early 17th-century Dutch Republic. He is particularly noted for introducing the life-size, full-length format to Dutch portraiture.[4]