Old State House (Boston)

	Old State House
	U.S. National Register of Historic Places
	U.S. National Historic Landmark
	Old State House surrounded by skyscrapers in 2013
Location	Boston, Massachusetts
Coordinates	42°21′31.57″N 71°3′28.1″W / 42.3587694°N 71.057806°W
Built	1713
Architect	Original Architect: Thomas Joy (rebuilt 1748); Repairs and alternations: Thomas Dawes (c. 1772); Alterations: Isaiah Rogers (1830); Restoration: George Albert Clough (1881–1882); Renovation: Goody, Clancy and Associates (1991)
Architectural style	Georgian
NRHP reference No.	66000779
Significant dates
Added to NRHP	October 15, 1966
Designated NHL	October 9, 1960

The Old State House, also known as the Old Provincial State House, is a historic building in Boston, Massachusetts, built in 1713. It was the seat of the Massachusetts General Court until 1798. It is located at the intersection of Washington and State Streets and is one of the oldest public buildings in the United States.

It is one of the landmarks on Boston's Freedom Trail and is the oldest surviving public building in Boston. It now serves as a history museum that was operated by the Bostonian Society through 2019. On January 1, 2020, the Bostonian Society merged with the Old South Association in Boston to form Revolutionary Spaces. The Old State House was designated a National Historic Landmark in 1960 and a Boston Landmark by the Boston Landmarks Commission in 1994.