Tandy Hills Natural Area (THNA) is a 210-acre (0.85 km2) indigenous remnant prairie located in Fort Worth, Texas.

The land was obtained by the City of Fort Worth in 1960 and designated a natural area in 1987.

Noted for its unusually complete collection of prairie flora, THNA contains more than 1200 native species.

The land is a living demonstration of how most of Fort Worth appeared in predevelopment times.

Tandy Hills is adjacent to Interstate 30 and less than 5 miles from Downtown Fort Worth.