City Hall Plaza in Boston, Massachusetts, is a large, open, unadorned public space in the Government Center area of the city. The architectural firm Kallmann McKinnell & Knowles designed the plaza in 1962 to accompany Boston's new City Hall building. The multi-level, irregularly-shaped plaza consists of red brick and concrete. As of March 2011, plans are underway to redesign the plaza and adjacent building.

City Hall Plaza may refer to:

• City Hall Plaza (Boston), Massachusetts, USA
• City Hall Plaza (Manchester), New Hampshire, USA