Constantine Official Site
The official site for the film includes cast and story information as well as multimedia.

Enterviews: Constantine
Review of Keanu Reeves' latest comic book adaptation.

FilmForce: Constantine
A database of information, news, and interviews.

Future Movies: Constantine
Detailed review from comic book fan including photographs.

IMDb: Constantine
Cast, crew, production information, and links.

Mooviees! - Constantine (2005)
Features photos, wallpapers, trailers, review links, cast overview, synopsis and production notes.

Rotten Tomatoes: Constantine
Critical reviews, information, production notes, trailers, and images.

The Celebrity Cafe Review
Bobby Blades assesses the comic book adaption to the silver screen.