Who ruled Greece?

Answer 1

Greece currently is ruled by its Prime Minister (who since September 2015 has been Alex Tsipiras, but is prone to changing).

Historically, the vast majority of Ancient Greece was ruled by monarchies or oligarchies and not by elections. Athens was a particular and unique case in that it had citizen-led rule (direct democracy) for a part of its time. Notwithstanding the fictional nature of Homer's The Odyssey, it should not be surprising that when Telemachus travels in The Odyssey, that not only is he the prince of the Kingdom of Ithaka, but that he meets the kings of Pylos, Sparta, and Mycenae. These places were ruled by monarchies.

Medieval Greece was either part of the Byzantine Empire, the Republic of Venice, or the Ottoman Empire, or some combination of the three.

Answer 2

Ancient Greece in its Hellenic Period was comprised of many different independent city-states rather than, like Rome or Persia, one single political entity. Still, the rulers in these Greek city-states may be roughly divided into the following three groups: first, dictatorial rulers who controlled their societies absolutely; second, small "elite" groups that ruled absolutely on the basis of military prowess and/or economic wealth (etc.); third, common citizens ruled through democratic means of some kind.

Answer 3

No one was a ruler in Greece. Not even in ancient Greece. Citizens are the highest social class. It depends on wealth and how high you were in the social structure.