Fronton Island
| Etymology | Fronton, Texas |
|---|---|
| Geography | |
| Location | Rio Grande |
| Coordinates | 26°24′0″N 99°4′8″W / 26.40000°N 99.06889°W |
| Area | 160 acres (65 ha) |
| Highest elevation | 177 ft (53.9 m) |
| Administration | |
United States | |
| State | Texas |
| County | Starr County |
Fronton Island (also known as Frontón Island and Isla de San Francisco) is an uninhabited island in the Rio Grande in Starr County, Texas.