| Official Name: | Blockville, New York |
| Settlement Type: | Hamlet |
| Pushpin Map: | New York#USA |
| Pushpin Label: | Blockville |
| Pushpin Map Caption: | Location of Blockville in New York |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | New York |
| Subdivision Type2: | County |
| Subdivision Name2: | Chautauqua |
| Subdivision Type3: | Town |
| Subdivision Name3: | Harmony |
| Timezone: | Eastern (EST) |
| Utc Offset: | -5 |
| Timezone Dst: | EDT |
| Utc Offset Dst: | -4 |
| Coordinates: | 42.0817°N -79.4123°W |
| Postal Code Type: | ZIP code |
| Postal Code: | 14710 |
| Area Code: | 716 |
| Blank Name: | FIPS code |
| Blank1 Name: | GNIS feature ID |
| Blank1 Info: | 944268 |
Blockville is a hamlet located in western New York, United States, at the intersection of State Route 474 and County Route 35, between Panama and Ashville, in the town of Harmony in Chautauqua County. A Dollar General store is located in Blockville.