Fifth Avenue High School is a defunct school located at 1800 Fifth Avenue in Pittsburgh, Pennsylvania's Bluff neighborhood, United States. Built in 1894 as a large Romanesque/Gothic Revival building, it served the Pittsburgh Public Schools until its closure in 1976. For over thirty years the building sat empty, boarded up, and fenced off until it was eventually converted into other uses. The building was listed in the National Register of Historic Places in 1986 and was listed as a Pittsburgh History & Landmarks Foundation landmark in 1998 and a City of Pittsburgh landmark in 1999.