Rubén Gajardo (born 5 January 1968) is a Chilean former professional tennis player.

Gajardo, a South American Games silver medalist for Chile, began competing on the professional tour in the late 1980s.

He had a career high singles ranking of 348, with his best Challenger performance a semi-final appearance at Ostend in 1988.

[1] At Grand Prix level he made a second round once, when he beat Andrei Olhovskiy at Kitzbühel in 1989.

[2]