Ernesto "Estong" Ballesteros (born January 28, 1973, in Manila, Philippines) is a Filipino former professional basketball player in the Philippine Basketball Association (PBA). He was drafted fourth overall by Shell in 1997.
Ballesteros played for several teams during his earlier career. He played for Shell, Coca-Cola, and for the Barangay Ginebra Kings. He also played in the defunct MBA for the Pangasinan Presidents and Pampanga Dragons. He was a free agent in the 2005âÂÂ06 and 2006âÂÂ07 seasons, but he was signed by Welcoat in the 2007âÂÂ08 PBA Philippine Cup in a two-year contract.