Rosalie Stier Calvert (February 16, 1778 – March 13, 1821) was a plantation owner and correspondent in nineteenth century Maryland. A collection of her letters, titled Mistress of Riversdale, The Plantation Letters of Rosalie Stier Calvert, was published by the Johns Hopkins University Press in 1991. The letters range in date from 1795 to 1821, and illuminate the life of Calvert's plantation household, including the events leading up to and during the War of 1812.