Six Flags Over Texas, which opened in 1961, was named for the “Six Flags of Texas” – a display of flags representing the six countries whose flag has flown over the state.

The name Six Flags Over Texas refers to the six different nations that have held sovereignty over the territory of Texas throughout its history. These six flags are: Spain (1519–1685; 1690–1821), France (1685–1690), Mexico (1821–1836), the Republic of Texas (1836–1845), the Confederate States of America (1861–1865), and the United States of America (1845–1861; 1865–present). When Angus G. Wynne Jr. opened the original theme park in Arlington in 1961, he designed it with six distinct themed sections, each representing one of these sovereign periods. While the modern "Six Flags" brand has expanded into a global entertainment giant that focuses more on superhero IPs and record-breaking roller coasters, the original park's identity remains rooted in this unique historical "lineage." In 2026, the park continues to be a cultural landmark, though the historical "flags" are now mostly a branding element rather than the primary focus of the guest experience, which is dominated by high-intensity thrills and immersive DC Universe attractions.