Denis van Alsloot or Denijs van Alsloot was a Flemish landscape and genre painter, draughtsman and tapestry designer. He was employed as a court painter and worked for the local elite in Brussels. He is considered to be a member of the Sonian Forest school of landscape painters, which included landscape painters such as Jacques d'Arthois and Cornelis Huysmans. These painters working in Brussels had a preference for depicting scenes from the Sonian Forest near Brussels. Van Alsloot was also a specialist in depicting civil processions, local festivals and ceremonies.