Around 200 drivers were found to be driving under the influence of alcohol in the Attica region over the long weekend.
Pentecost Monday was a holiday.
Athens traffic police said that most of the violators were stopped near nightclubs, restaurants and bars.
A total of 2,145 drivers underwent breathalyzer tests as traffic police hit the streets in higher numbers than usual from Friday to Monday night.
A traffic police statement said the force intends to increase checks to improve road safety.