| U.S. Customhouse | |
| Location: | Newburyport, Massachusetts |
| Coordinates: | 42.8122°N -70.8692°W |
| Built: | 1834 |
| Architect: | Robert Mills |
| Architecture: | Classical Revival |
| Added: | February 25, 1971 |
| Refnum: | 71000089 |
| Nrhp Type2: | cp |
| Nocat: | yes |
| Designated Nrhp Type2: | February 25, 1971 August 2, 1984 |
| Partof: | Market Square Historic District (#71000088) Newburyport Historic District (#84002411) |
The former United States Customhouse (now the Custom House Maritime Museum) is a historic building at 25 Water Street in Newburyport, Massachusetts.
The Classical Revival-style building was constructed in 1834 and served a custom house until Newburyport declined in popularity as a major port. The Newburyport Maritime Society, Inc. operates the Custom House Maritime Museum to showcase the maritime heritage of the Merrimack Valley.[1] The building was added to the National Register of Historic Places in 1971. It is also a contributing element to the Market Square Historic District (also listed in 1971), and the Newburyport Historic District (listed in 1984).[2]