Wesley W. Posvar Hall

Wesley W. Posvar Hall, formerly known as Forbes Quadrangle, is a landmark building on the campus of the University of Pittsburgh in Pittsburgh, Pennsylvania, United States. At 744,695 square feet it is the largest academic-use building on campus, providing administrative offices, classrooms, lecture halls, a food court, and computer labs. The hall sits on the former site of Forbes Field, and contains several artifacts, including the former stadium's home plate and one of two surviving Langley Aerodromes.

Posvar Hall houses Pitt's School of Education, College of General Studies, Graduate School of Public and International Affairs, University Center for International Studies, and the Dietrich School of Arts and Sciences's social sciences departments.