Nam Gyu-ri is a South Korean actress and singer. She was the leader of the Korean female trio SeeYa. In 2009, Nam Gyu-ri had a contract dispute with the group's management company and left the group. Nam has also acted, most notably in the film Death Bell and the drama 49 Days.

Death Bell is a 2008 Korean horror slasher film. The only Korean horror film released over the summer of 2008, it is the first feature by former music video director Chang, who also co-wrote the screenplay. Death Bell stars Lee Beom-soo in his first horror film role, and K-pop singer Nam Gyu-ri in her acting debut. Set in a Korean high school, the film's native title refers to gosa, the important midterm exams that all students are required to sit. It is later followed by a stand-alone sequel Death Bell 2: Bloody Camp.