The 2016 Open Castilla y León was a professional tennis tournament played on outdoor hard courts. It was the 31st edition, for men, and 2nd edition, for women, of the tournament and part of the 2016 ATP Challenger Tour and the 2016 ITF Women's Circuit, offering totals of €64,000+H, for men, and $10,000, for women, in prize money. It took place in El Espinar, Segovia, Spain, on 25–31 July 2016.