Granjeno is a city located in Hidalgo County, Texas, United States. As of the 2020 census, the population of Granjeno was estimated to be around 300 people.

Granjeno is a small city situated along the Rio Grande and is a part of the McAllen–Edinburg–Mission metropolitan area. The city offers a quiet and rural living environment, with access to several parks and nature reserves for outdoor activities such as hiking, birdwatching, and fishing.