Round Top is a town in Fayette County, Texas, United States.

As a part of the Stephen F. Austin colony, James Winn acquired 4,428 acres (17.9 km2; 6.9 sq mi) in 1831; the present townsite was included in this tract.

The elevation in the center of Round Top is 439 feet (134 m) above sea level.

Texas State Highway 237 passes through the center of town, leading northeast 22 miles (35 km) to Brenham and southwest 16 miles (26 km) to La Grange, the Fayette County seat.

According to the United States Census Bureau, the town of Round Top has a total area of 0.97 square miles (2.5 km2), all land.

Round Top is the home of three visitor-drawing programs: Round Top is the home of the oldest building in Fayette County, Moore's Fort, which was moved there from nearby La Grange.