Countdown
- Blwyddyn: 2019
- Gwlad: United States of America
- Genre: Horror, Thriller
- Stiwdio: Wrigley Pictures, Universal Pictures, STXfilms
- Allweddair: nurse, countdown, supernatural, religion, phone terror, devil, duringcreditsstinger, mysterious, sinister
- Cyfarwyddwr: Justin Dec
- Cast: Elizabeth Lail, Jordan Calloway, Talitha Eliana Bateman, Peter Facinelli, Dillon Lane, Matt Letscher