Gregers Algreen-Ussing (born 30 November 1938 in Tehran) is a Danish architect and professor emeritus at the Kunstakademiets Arkitektskole (School of Architecture).
He is the son of an engineer Helge Algreen-Ussing and teacher Gudrun Benthin.
He became a Knight of the Order of the Dannebrog in 1994 and in 2006 he received the NL Høyen medal.
He has been married to psycho-analylist Judy Gammelgaard since 1982.
[1] Andersen-Ussing received the N. L. Høyen Medal in 2006.