| New York's 40th congressional district | |
|---|---|
| Obsolete district | |
| Created | 1910 |
| Eliminated | 1970 |
| Years active | 1913–1973 |
The 40th congressional district of New York was a congressional district for the United States House of Representatives in New York. It was created in 1913 as a result of the 1910 census. It was eliminated in 1973 as a result of the 1970 redistricting cycle after the 1970 United States census. It was last represented by Henry P. Smith III who was redistricted into the 36th district.