Hye is an unincorporated community in western Blanco County, Texas, United States.
Hiram ("Hye") G. Brown and his parents settled in the Rocky Creek area of Blanco County, circa 1872. He constructed a small store and house near the Pedernales River. Brown was appointed postmaster upon getting a post office established in his store on April 17, 1886. The post office was named Hye for him.The establishment of the post office drew other businesses to the area, eventually bringing in a grist mill and a cotton gin. In 1904, Brown erected a new building for the store and post office.In 1965, on the porch of the Hye post office, Lyndon B. Johnson swore in Lawrence F. O'Brien as United States Postmaster General.In 1966, the Hye General Store and Post Office was designated a Recorded Texas Historic Landmark, Marker number 2607.