Nobody Knows () is a 1970 South Korean drama film directed by Jang Il-ho.
Jeong-ah, who grew up at an orphanage, works as a maid, and is raped by Yeong, the son of her employer. Yeong was engaged to Hyeon-ju, but dislikes her and decides to marry Jeong-ah instead. He takes Jeong-ah to a church and celebrates their own wedding by themselves. Yeong's parents and relatives learn of the fact and go late to the church to celebrate with the new couple.