Rachel de Montmorency, née Rachel Marion Tancock (15 July 1891 – 15 November 1961), was an English painter and artist working in stained glass. She learned about stained glass when she worked for artist Christopher Whall in the 1910s and 1920s. During World War I she worked as a voluntary nurse. After she married Miles de Montmorency in 1931 the couple often worked together on her commissions. She was a follower of the Arts and Crafts Movement.