Willamette Hall is a building on the University of Oregon campus in Eugene, Oregon. Opened in 1990, it is home to the university's Physics Department. The four-story building contains numerous faculty offices, a 224-seat lecture hall, classrooms, and laboratories. The atrium is named after Paul Olum, former university president and mathematician. As part of the Lorry I. Lokey Science Complex, it connects directly to Klamath Hall.