There’s no way to be sure, but anthropologists generally agree that the circle was created long before history was recorded. And, the Greeks considered the Egyptians to be the inventors of geometry. So not a clear idea on the answer of this question. Let’s have a look at the definition of circle.
As per Euclid’s, circles are defined as, “A circle is a plane figure bounded by one curved line, and such that all straight lines drawn from a certain point within it to the bounding line, are equal. The bounding line is called its circumference and the point, its centre.”