If there were, they were slaves. All of the Greek states were very strict about who got to be a citizen, and they had to be Greek. It was a fairly homogeneous population.

The concept of "black" slavery is a relatively recent one. before the conquest of the americas by europe and the african slave trade,slavery was not considered to be a "black" plight.In fact,the very word "slave" derives from the word "slav"which was the name of peoples living in certain areas of eastern europe. During the dark and early medieval ages,these people were continuously subjugated and made slaves of by their european cousins. It is well documented that the ancient greeks had contact with back peoples. (primarily egyptians)The 5th century bc greek historian Herodotus writes about the black peoples in egypt and other black nations.In all surviving documents of ancient greece depicting black peoples it is only ever as a mere discription. there are no hints whatsoever of any racial overtones or bias,The ancients had many biases,religion or tribal were foremost but there arent any surviving documentation that points to racism.I suspect that a black living in ancient greece may not have risen to any high status,but this would be due more to nationality or religion as opposed to race.The ancients were an extremely tribal people so it is unlikeley that you would even find so many blacks in greece. It was more likely to find greeks in africa.And those for the most part would have been merchants,students or historians. This idea of black inferiority is an idea fostered within the last 500 years of a human history that spans thousands.

Not any blacks ever in Greece that I know of...the Greeks called Africans, that were black Ethiopians, there is a Greek myth that Helios the sun god flew to close to ethiopia and all the peoples skin there turned black, true i swear.