Two gunmen on motorcycles fired 15-20 shots at the Israeli embassy in Athens before dawn Friday. No one was injured.
Police have closed off the area and are investigating the attack.
The bullet shells indicated that the gunmen fired Kalashnikov semi-automatic rifles.
Israel and Greece have good relations, but the government has been very critical of Israeli policies towards the Palestinian Authority, and the neo-Nazi Golden Dawn party has gained popularity in the country.
American and German offices have been targeted by terrorists in previous attacks last year and in 2007.