Almost every floor rated tile can be used as a wall tile. Just keep in mind the size and weight of the tile in question.
However please note that almost every wall tile is not suitable for a floor application. This is because many wall specific tiles are made with delicate surfaces and may scratch easily if placed on the floor. They are also commonly made of weaker materials because they do not intend for foot traffic to be applied and may crack or break if placed on the floor.