Ragnhild Keyser (12 December 1889 – 12 October 1943) was a Norwegian painter.
She was the daughter of Ove Ludvig Keyser (1830-1889) and Karen Helga Ingebretsen (1849-1942).
She became inspired by Cubism and was most influenced by André Lhote and Fernand Léger.
She exhibited at Blomqvist's Kunsthandel in Oslo during 1932 and studied with Georg Jacobsen (1935–36).
[4] Her painting Armour is in the collection of the National Museum of Art, Architecture and Design in Oslo.