455 Massachusetts Avenue is a high-rise office building located in the Mount Vernon Triangle neighborhood of Washington, D.C., United States. The 12-floor building was designed by Gensler and completed in 2007, and rises to 151 feet (46 m).

Tenants

• Citizens for Responsibility and Ethics in Washington
• National Democratic Institute
• PATH

See also

• List of tallest buildings in Washington, D.C.