Sammy Giammalva Jr. (born March 24, 1963) is a former professional tennis player from the United States.

He achieved a career-high singles ranking of World No.

28 in 1985 and a career-high doubles ranking of World No.

Giammalva's father Sam played top-level amateur tennis and participated on two Davis Cup winning teams for the U.S. His older brother Tony was also a touring pro.

Giammalva left the Grand Prix tour in 1989 and enrolled in Rice University.