| Official Name: | Blackjack, Texas |
| Settlement Type: | Unincorporated community |
| Pushpin Map: | Texas#USA |
| Pushpin Label: | Blackjack |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Texas |
| Subdivision Type2: | County |
| Subdivision Name2: | Smith |
| Unit Pref: | Imperial |
| Timezone: | Central (CST) |
| Utc Offset: | -6 |
| Timezone Dst: | CDT |
| Utc Offset Dst: | -5 |
| Elevation Ft: | 367 |
| Coordinates: | 32.2058°N -95.1781°W |
| Postal Code Type: | ZIP code |
| Postal Code: | 75789 |
| Area Codes: | 430 & 903 |
| Blank Name: | GNIS feature ID |
| Blank Info: | 1378013 |
Blackjack is an unincorporated community in Smith County, Texas, Texas. The community is located along Farm to Market Road 346.