A Single Rider () is a 2017 South Korean drama film starring Lee Byung-hun and Gong Hyo-jin. The film released on February 22, 2017. Co-produced and distributed by Warner Bros. Pictures, the film is the directorial debut of Lee Joo-young.
Promising fund manager Kang Jae-hoon is at the brink of despair when his company goes bankrupt. He decides to take an impulsive trip to Australia to visit his wife, Soo-jin, and their son Jin-woo. Upon arriving, Jae-hoon sees them living happily without him and starts suspecting Soo-jin's affectionate relationship with her neighbor, Kris. Taken aback by the situation, Jae-hoon decides to watch them from a distance, only to confront a shocking truth that goes against what he stands for.