Cornelia Gerardina Boellaard, known as Corrie (6 February 1869, Nijmegen - 29 November 1934, Laren) was a Dutch painter and graphic artist. She was also referred to as "Corrie Rink-Boellaard" and "Corrie Treub-Boellaard".
Boellaard was born into a prominent Dutch family, with numerous members in government and the military. Her father, Jan Willem Boellaard (1830-1923), was a military officer and landowner in Herwijnen who served as an adjutant to Queen Wilhelmina.
She studied with Gerard Overman (1855-1906) in Amsterdam, then with Jules Joseph Lefebvre and Tony Robert-Fleury at the Académie Julian in Paris. In 1899, she married the painter, , who also acted as her teacher. He died prematurely in 1903. Four years later, she remarried; to , an obstetrician and Professor at Amsterdam University.
She was a member of Arti et Amicitiae and the . She exhibited at the Nationale Tentoonstelling van Vrouwenarbeid 1898 (National Exhibition of Women's Labor), De Vrouw 1813âÂÂ1913 (The Woman) and the Exhibition of Living Masters.