This could have been a good topic for discussion.
Depends how you define "civilisation". If you are only interested whether there were other civilisations before the Greek/Roman one, the answer is yes.
I would say as old as 10,000 years BC.
My main interest though is not whether there were civilisations at say 10K years BC, but a)whether the development of human species was really a continuum b)Who destroyed those civilisations and c) why the top technology of earlier civilisations did not pass on to the next civilisation.
The last 2 known Civilisations that got destroyed were the Egyptian and the Atlantis.
Ever since no other civilisation was destroyed.