No. I imagine a three pole is a bit more expensive though.
You did not by chance mean a 3 way in lieu of a single pole did you? Still legal also.
Some of the 3 pole "switches" I've used are manual motor starters and include overload protection; if this is what you are looking at, be sure it can be wired for single phase use. Mine required current to go trough all 3 poles, but that just requires a jumper.