| Blackwell House | |
| Nrhp Type: | nrhp |
| Location: | Roosevelt Island, New York, New York |
| Coordinates: | 40.7603°N -73.9511°W |
| Built: | 1796 |
| Added: | February 25, 1972 |
| Refnum: | 72000862 |
| Designated Other2 Name: | New York City Landmark |
| Designated Other2 Date: | March 23, 1976 |
| Designated Other2 Abbr: | NYCL |
| Designated Other2 Number: | 0912 |
| Designated Other2 Link: | New York City Landmarks Preservation Commission |
| Designated Other2 Color: |
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| Designated Other1: | New York State Register of Historic Places |
| Designated Other1 Num Position: | bottom |
| Designated Other1 Number: | 06101.000498 |
| Designated Other1 Abbr: | NYSRHP |
| Designated Other1 Date: | June 23, 1980 |
Blackwell House is a historic house on Roosevelt Island in New York City. The house's name comes from Jacob Blackwell, who built the house in 1796. He was the great-grandson of Robert Blackwell, who in 1686 took ownership of what was then known as Manning's Island and subsequently became the island's new namesake.[1] The house was added to the National Register of Historic Places in 1972.