Frederick Louis Roehrig (1857 – 1948) was an early 20th-century American architect. Roehrig was born in LeRoy, New York, the son of the noted "orientalist and philoligist," Frederick L.O. Roehrig. He graduated from Cornell University in 1883 and also studied architecture in England and France. His architectural styles evolved over time, covering the Victorian, American Craftsman, and Neo-Classical styles. Roehrig is particularly known for his many landmark buildings in Pasadena, California, including the Hotel Green, and Pasadena Heritage has occasionally conducted tours of Roehrig's buildings.

Notable works

Roehrig's notable works include: Other buildings designed by Roehrig include First Presbyterian Church of Pasadena, Pasadena Hospital, Alhambra Library, the power house of the Los Angeles Aqueduct, W.H. Bartlett Estate in Montecito, and the Andrew McNally House in Altadena. Roehrig's brother, Dr. G. Edward Roehrig, was organizer and president of the Zoological Society of Los Angeles. Frederick Roehrig died at age 90 in 1948.