Hendrika Geertruida (Riek) Milikowski-de Raat (6 December 1918, Amsterdam, - 5 August 2018 in Eext) was a Dutch communist, resistance fighter and painter who specialised in realism and symbolism with a focus on figures. De Raat's work is exhibited at the Stedelijk Museum in Amsterdam and Museum De Lakenhal in Leiden as well as internationally.