Gerrit Willem van Blaaderen was a Dutch painter and draftsman.
Van Blaaderen has lived and worked in Amstelveen, Paris, London, Bloemendaal, Huizen, Laren and Bergen. In 1905 he married the well-to-do painter Riet Hoogendijk. He was a member of the artists' associations Arti et Amicitiae and Sint Lucas in Amsterdam.
In Bergen, Leo Gestel, Arnout Colnot, Dirk Filarski and Charley Toorop belonged to his circle of friends.