Claire Louise van Kampen (Lady Rylance) (born 9 November 1953) is an English director, composer and playwright. She composed the music for Mark Rylance's 1989 performance as Hamlet and shared the 2007 Sam Wanamaker Award with him. Her composing credits include music for productions of the plays Days and Nights and Boeing-Boeing. In 2015, she was historical music advisor and arranger of Tudor music on the BBC TV series Wolf Hall.