The European Earthquake Monitoring Centre recorded the quake's epicentre at 22 km northwest of the Greek capital city.
Reuters reported that people were running from buildings in panic while high rise towers had been evacuated.
This is believed to be the first earthquake to hit Athens since the deadly one in 1999 - which left 143 people dead, 700 injured and 70,000 buildings damaged.
There were no immediate reports of injuries or damage and reports say the tremors did not last long.
Six killed in Houthi attack on ship; US strikes vessel in Gulf of Oman
Four crew members and two rescuers have been killed in an attack by Houthis on a cargo ship in the Bab el-Mandeb strait on Tuesday, Yemen's transport ministry said, while the US military said it struck a container ship attempting to sail toward an Iranian port.
Rain pounds Beijing as Typhoon Dolphin sweeps through China
China's strongest typhoon this year lashed wide swathes of the country, battering the capital with bouts of intense rain that flooded key roads and stranded vehicles, after setting new rainfall records in central and eastern provinces.
At least 2 dead, nearly a million without power after severe US Midwest storms
Powerful storms have moved through the US Midwest on Tuesday, leaving at least two people dead and nearly a million without power, officials said.
One dead, 172 rescued after Indonesian ferry from Bali catches fire
Indonesian authorities rescued 172 people on Wednesday after a ferry travelling from the tourist island of Bali caught fire in waters off Lombok, officials said,as the search continued for any other missing passengers.
Colombia quake death toll tops 250 as rescuers race to find survivors
Rescue crews dug through mountains of shattered concrete in western Colombia on Tuesday, racing to find survivors after a powerful earthquake killed more than 250 people, according to estimates from local authorities.
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