The Henry Art Gallery is a contemporary art museum located on the campus of the University of Washington, in Seattle, Washington, United States. Located on the west edge of the university's campus along 15th Avenue N.E. in the University District, it was founded in February, 1927, and was the first public art museum in the state of Washington. The original building was designed by Bebb and Gould. It was expanded in 1997 to 40,000 square feet (3,700 m2), at which time the 154-seat auditorium was added. The addition/expansion was designed by Gwathmey Siegel & Associates Architects.

Gwathmey Siegel Kaufman & Associates Architects LLC is a New York City-based architectural firm founded in 1967 by architects Charles Gwathmey and Robert Siegel.