Las Lomitas is an unincorporated community and census-designated place (CDP) in Jim Hogg County, Texas, United States.

Las Lomitas is located in northern Jim Hogg County at 27°20′34″N 98°40′8″W / 27.34278°N 98.66889°W / 27.34278; -98.66889 (27.342890, -98.668876).

Texas State Highway 16 forms the western border of the community and leads north 38 miles (61 km) to Freer and south 2 miles (3 km) to the center of Hebbronville.

Texas State Highway 359 forms the southeastern border of Las Lomitas, leading southwestward into Hebbronville and northeastward 25 miles (40 km) to Benavides.

According to the United States Census Bureau, the Las Lomitas CDP has a total area of 3.9 square miles (10.2 km2), all land.