State Arsenal and Armory | |
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| Location | 360 Broad St., Hartford, Connecticut |
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| Coordinates | 41°45′54″N 72°41′10″W / 41.76500°N 72.68611°W |
| Area | 3.5 acres (1.4 ha) |
| Built | 1906 |
| Architect | Morris, B.W.; Payne, W.A., et al. |
| Architectural style | Late 19th And 20th Century Revivals |
| NRHP reference No. | 96000357[1] |
| Added to NRHP | April 4, 1996 |
The State Arsenal and Armory, formally the Governor William A. O'Neill State Armory and informally the Connecticut State Armory, is a historic military facility at 360 Broad Street in Hartford, Connecticut. Built in 1906, it is a distinctive example of Classical Revival architecture, built using then-innovative construction techniques involving concrete and cast stone. It was listed on the National Register of Historic Places in 1996.[1] It serves as the headquarters of the Connecticut State Militia.