Estero Llano Grande State Park

{{short description|State park in Texas, United States}}

{{use mdy dates|date=December 2021}}

{{Infobox protected area

| name = Estero Llano Grande State Park

| iucn_category =

| photo = A resaca in Estero Llano Grande State Park, Hidalgo County, Texas, USA (13 April 2016).jpg

| photo_caption = A resaca in Estero Llano Grande State Park

| photo_alt = A resaca in Estero Llano Grande State Park

| map = Texas#USA

| map_caption =

| 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 = {{coord|26.126411|-97.956518|region:US|format=dms|display=inline,title}}

| coords_ref = {{cite gnis|1340274|LLano Grande Lake| 2013-01-07}}

| area = {{convert|230|acre|ha}}

| established =2006

| visitation_num = 27,007

| visitation_year = 2022

| visitation_ref = {{cite web |author=Christopher Adams |publisher= |url=https://www.kxan.com/news/texas/what-is-the-most-visited-state-park-in-texas-heres-the-top-10-countdown/ |title=What is the most visited state park in Texas? Here’s the top 10 countdown

|work= |website=KXAN.com |access-date=November 21, 2023}}

| 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.