The Hardy Boys/Nancy Drew Mysteries is a television series which aired for three seasons on ABC. The series starred Parker Stevenson and Shaun Cassidy as amateur sleuth brothers Frank and Joe Hardy, respectively, and Pamela Sue Martin as girl detective Nancy Drew.

The Hardy Boys/Nancy Drew Mysteries was unusual in that it often dealt with the characters individually, in an almost anthological style. That is, some episodes featured only the Hardy Boys and others only Nancy Drew.