Only if you have a region-free player. Otherwise, they will not be viewable outside of that country (or, at least, on a player not coded for that region).

This can be done away with by either purchasing a region-free player (which aren't expensive and are growing increasingly common), downloading a program to "free" your DVD-ROM drive so that it doesn't recognize region codes, or to simply burn a 1:1 copy of the movie and remove the region codes with a program.