Mercy Black
- Blwyddyn: 2019
- Gwlad: United States of America
- Genre: Horror, Mystery, Thriller
- Stiwdio: Divide / Conquer, Blumhouse Productions
- Allweddair: child murder, urban legend, mental institution, stabbing
- Cyfarwyddwr: Owen Egerton
- Cast: Daniella Pineda, Austin Amelio, Elle LaMont, Lee Eddy, Miles Emmons, Janeane Garofalo