| Estero Llano Grande State Park | |
| Photo Alt: | A resaca in Estero Llano Grande State Park |
| Map: | Texas#USA |
| Map Alt: | A map of Texas showing the location of Estero Llano Grande State Park |
| Relief: | yes |
| Label: | Estero Llano Grande State Park |
| Label Position: | left |
| Marker Size: | 5 |
| Location: | Hidalgo County, Texas, United States |
| Nearest City: | Weslaco, Texas |
| Coordinates: | 26.1264°N -97.9565°W |
| Area: | 230acres |
| Established: | 2006 |
| Visitation Num: | 27,007 |
| Visitation Year: | 2022 |
| Visitation Ref: | [1] |
| Governing Body: | Texas Parks and Wildlife Department |
| Url: | https://tpwd.texas.gov/state-parks/estero-llano-grande |
Estero Llano Grande State Park is located south of the city of Weslaco in Hidalgo County in the U.S. state of Texas.
The land where the parks sits was part of the Llano Grande Land Grant granted to Juan José Hinojosa in 1776 by Charles IV of Spain.[2] In early 2000, the state of Texas pieced together the current park from a variety of separate parcels.[2]
The Arroyo Colorado and Llano Grande Lake border the park on the south.[2]