Charles Ryskamp (October 21, 1928 – March 26, 2010) was a former director of both The Frick Collection and the Pierpont Morgan Library, a longtime professor at Princeton University, and an avid collector of drawings and prints. He was born in East Grand Rapids, Michigan,[unreliable source?] or Grand Rapids, Michigan. At the time of his death the Yale Center for British Art had selections from his collection featured in the exhibition "Varieties of Romantic Experience: Drawings from the Collection of Charles Ryskamp". This exhibition, which was to be up from February 4 until April 25, 2010, included works from Ryskamp's collection by Romantic period artists such as J. M. W. Turner, William Blake, David Wilkie and Caspar David Friedrich. His collection of Danish Golden Age drawings with works by among others Christen Købke and Johan Thomas Lundbye was one of the finest in private hands.
Charles Ryskamp died on March 26, 2010 at the age of 81. The Ryskamp collection was sold at auction by Sotheby's in New York City primarily to benefit Princeton University on January 25, 2011, during the house's Old Masters week.
- Grimes, William (30 March 2010). "Charles Ryskamp, Director of Morgan and Frick, Dies at 81". The New York Times. Retrieved 17 April 2010.
- Barker, Nicolas (16 April 2010). "Charles Ryskamp: Passionate art curator and scholar". The Independent (London). Retrieved 17 April 2010.
- "Charles Ryskamp: scholar and museum director". The Times (London). 14 April 2010. Retrieved 17 April 2010.