The website Disney Movies List has a complete list of all Disney movies, searchable by year, genre or type (animated, Pixar, or most popular).
The complete list spans from Snow White and the Seven Dwarfs (1937) to the yet-to-be-released Toy Story 4 (~2015), and offers a short synopsis for each title.
Printable List of Disney Movies
If you're looking for a more printer-friendly list so that you can cross out each title as you watch it, then D23: The Official Disney Fanclub is perhaps more suitable. This list is organised in chronological order, contains 655 titles and ends with the 2012 movie Chimpanzee.