Moviefone

Showtimes and tickets for the United States and part of Canada. Also includes reviews and exclusive trailers.
http://www.moviefone.com/

Fandango

Find showtimes for any movie in any theater in the US and purchase tickets online.
http://www.fandango.com/

Cinema Clock

Canada movie guide with showtimes and upcoming movies.
http://www.cinemaclock.com

Hollywood.com: Show Times

Search for movie showtimes by movie, location, and date.
http://www.hollywood.com/showtimes/

Showtimes To Go

Movie listings for Palm-series organizers [free registration required].
http://www.showtimesToGo.com

Mr. Movie Times

U.S. movie showtimes by state.
http://www.mrmovietimes.com/index2.html

Now In Theaters

Movie listings by ZIP code and area radius.
http://www.intheaters.com/

Now Running

Provides showtimes, reviews, and previews for Indian movies in the United States.
http://www.nowrunning.com/

Movies.com - Times & Tickets

View movie listings, showtimes, reviews, and buy tickets for theaters across the US.
http://movies.go.com/showtimes/

Nrilinks Entertainment Movie Showtimes

Showtimes for new and upcoming Hindi, Telugu, Tamil, Kannada and Malayalam movie releases in the US.
http://www.nrilinks.com/entertainment/showtimes/

Your Movies

Movies screening commercially in Australia: Descriptions, ratings, venues and session times. Invites user reviews.
http://www.yourmovies.com.au/

The New York Times: Local Movie Showtimes

Showtimes searchable by U.S. ZIP code.
http://movies2.nytimes.com/gst/movies/showtimes.html

Scoot: Cinema Finder

British database providing cinema details and screening information. Search by region, and optionally by film title.
http://www.scoot.co.uk/cinemafinder/