There are three in the general Orlando area. One is the Premium Outlets and that is closest to DTD. Just off Vineland, but you will need transport.
The next is a bit beyond Premium, called Lake Buena Vista outlets. That one is kind of weird, with odd shops and isn't as popular as the other two.
The largest is the old Beltz outlet, all redone now and called Prime Outlets. That's at the "end" of I drive (as you are moving away from Disney).
It's HUGE, but honestly I don't like it much for that very reason.
Be aware though, that other than the Disney shops (and if there is still the Universal shop) there really isn't a true outlet pricing system. Often you can get better merchandise from the full price stores when there is a sale.