Connecticut Street Armory, also known as the 74th Regimental Armory, is a historic National Guard armory building located at Buffalo in Erie County, New York. It is sited at Columbus Park. It is a massive castle-like structure built in 1899 of Medina sandstone. It was designed by architect Isaac G. Perry. It consists of a 3+1⁄2-story administration building with an attached 2-story drill shed all constructed of sandstone, lying on a rusticated battered stone foundation. The building features 4- to 6-story towers surrounding the administration building, and a 6+1⁄2-story square tower at the center entrance. It is home to the 74th Regiment of the New York National Guard. Prior to its construction, the site was home to a 13.5 million gallon reservoir.

It was listed on the National Register of Historic Places in 1995.

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  Connecticut Street Armory, view of main tower, July 2005
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  View from Niagara Street, April 2011
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  The armory after 1898

• Connecticut Street Armory, Buffalo as an Architectural Museum
• Connecticut Street Armory - U.S. National Register of Historic Places on Waymarking.com