Yes, through recognition and enforcement proceedings; the conditions and time limits are assessed case by case. In the opposite direction, enforcing Turkish judgments in Germany is also possible.
Recognition and enforcement run under Article 50 and following of the Act on Private International and Procedural Law (No. 5718), through an action brought before the civil court of first instance: the court checks reciprocity — which with Germany operates in practice — that the judgment is final, that defence rights were respected, and that it does not breach Turkish public policy — but it does not re-try the merits. Getting those conditions lined up early is what keeps the process from stalling.
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