| Demarest Building | |
|---|---|
 gelatinous print, 1891 | |
 | |
| General information | |
| Address | 339 Fifth Ave |
| Town or city | New York City |
| Country | United States |
| Coordinates | 40°44′52″N 73°59′05″W / 40.7478°N 73.9847°W |
| Construction started | 1889 |
| Demolished | 2021 |
| Owner | Pi Capital Partners |
| Height | four stories |
| Design and construction | |
| Architect(s) | James Renwick Jr. |
The Demarest Building was a four-story structure at 339 Fifth Avenue in Midtown Manhattan, New York City, designed by Renwick, Aspinwall & Russell and constructed for coachbuilder Aaron T. Demarest. An 1893 fire destroyed property in the building, which was later used for other purposes.