The Poppy Peak Historic District is a neighborhood and historic district located in the southwest corner of Pasadena, California. The neighborhood is located on the side of Poppy Peak, a 991-foot-high (302 m) mountain of the San Rafael Hills. Developer William Carr platted the neighborhood in 1924. The homes in the district were designed by a number of significant Modern Movement architects. The district was added to the National Register of Historic Places in 2009.