Richard Snowden Andrews (October 29, 1830 – January 5, 1903) was an American architect and a Confederate artillery commander and diplomat during the American Civil War. Andrews was a native of Baltimore, Maryland. A prolific antebellum architect, he designed the Weston State Hospital in West Virginia, the largest hand-cut stone building in America, in Gothic Revival and Tudor Revival styles. His other commissions included the Maryland Governor's residence in Annapolis and the south wing of the U.S. Treasury Building in Washington, D.C.