Constantine (stylized as Cons♰antįne) is an American occult detective drama television series developed by Daniel Cerone and David S. Goyer for NBC. Based on the DC Comics character of the same name as well as the film adaptation, it stars Matt Ryan as the eponymous John Constantine, an English exorcist and occult detective who hunts supernatural entities. The series premiered on October 24, 2014, and aired for one season, concluding on February 13, 2015.

Although the series was canceled after its first season, Ryan would reprise his role in the Arrowverse franchise, which retroactively established Constantine as part of the same continuity. Ryan also returned as Constantine in the DC Animated Movie Universe and its animated spin-off series Constantine: City of Demons.