The oldest wheel found in ancient excavations was discovered in what was Mesopotamia and is believed to be over 5,500 years old.
It is generally presumed that the first wheel was invented around the beginning of human history, probably around the same time that man first observed that a round log has the ability to roll along the ground.
The wheel was invented by some unknown caveman about 5,000 years ago.
The ancient Sumerians were the inventors of the wheel and was used as a potter's wheel to create clay items.