Cello is a 2005 South Korean horror film.


Hong Mi-ju's (Sung Hyun-ah) professor tries to coax her into going to a concert for Kim Tae-yeon's sister. Mi-ju declines both the concert and a job offer. She is confronted by a student who says that because of Mi-ju, her music is for nothing. The student promises revenge. Shaken, Mi-ju drives home and nearly avoids getting into an accident with a truck. At home, she receives a disturbing message on her cell phone.