Big Wells is a city in Dimmit County, Texas, United States.

[6] Texas State Highway 85 passes through the community, leading east 26 miles (42 km) to Dilley and Interstate 35, and west 18 miles (29 km) to Carrizo Springs, the Dimmit County seat.

According to the United States Census Bureau, the city of Big Wells has a total area of 0.54 square miles (1.4 km2), all land.

[5] As of the 2020 United States census, there were 483 people, 256 households, and 154 families residing in the city.

The city is served by the Carrizo Springs Consolidated Independent School District.