Belt, J. A., Building | |
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| Location | 227 E. Diamond Ave., Gaithersburg, Maryland |
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| Coordinates | 39°8′32″N 77°11′39″W / 39.14222°N 77.19417°W |
| Area | 0.1 acres (0.040 ha) |
| Built | 1903 |
| NRHP reference No. | 84001845[1] |
| Added to NRHP | August 9, 1984 |
The John A. Belt Building is a historic commercial building located at 227 East Diamond Avenue in Gaithersburg, Montgomery County, Maryland.