The Frost Tower is a 23-story skyscraper in San Antonio, Texas, USA. It was opened in 2019 at a cost of $142 million and is the first new office tower built in downtown San Antonio since 1989 when Weston Centre was built. Frost Tower replaced the old Frost Bank Tower as the headquarters of the eponymously named Frost Bank when it opened in 2019. In early 2025, the Institute of Texan Cultures will move in due to its original building being demolished.