Unless you know for a fact that you have a specially-modified DVD player that can handle Region 2 discs, the answer is no. Normal off-the-shelf US DVD players can only play Regions 0 and 1.
Go to Video Help (formerly DVD Help.com). Look up your DVD player model and see if there is a way to hack into multi-region playback. I bought a Philips DVD player for $40 at Target two years ago that can play any all regions and includes a PAL to NTSC converter built in! Of course, they don't TELL you that, you just have to know how to set it up. Mine involved punching a code into the remote and in less than one minute I was ready to go!