Members of the anarchist group Rouvikonas attacked the Iranian embassy in Athens with bottles of paint early on Monday morning.
The attack by 10 anarchists on motor-bikes occurred at 6 a.m in the leafy Athenian suburb of Psychiko.
The assailants disappeared after the attack. No arrests have been made.
In a Facebook post, a spokesman for the group said that the attack was in response to Iran’s brutal repression of the Kurds.