Sergio Lozano Aguilar (born 9 January 1952) is a Mexican former professional boxer who competed from 1974 to 1980. As an amateur, he competed in the men's welterweight event at the 1972 Summer Olympics.
He turned professional in 1974 and competed until about 1980, His professional boxing record lists a number of bouts from 1974 to 1980, including both wins and losses.