The campaign, started by RIA Novosti and the Student Community youth organization, commemorates the heroes of the eastern front and involves hundreds of partners in Russia and abroad.
The Greek partner, Kesidis Media Group, has bought 20,000 ribbons. Some of them were attached to two issues of a Russian-language weekly.
The ribbons will be handed out during events at Soviet war memorials across Greece on Saturday, when Russia marks the 64th anniversary of victory in WWII.
St. George ribbons will also be distributed in some 200 shops selling Russian goods and books in Athens and in 150 shops in Thessaloniki.
Orange and black are the traditional colors of Soviet and Russian awards for achievements in combat. The black and orange stripes symbolize smoke and fire.
In Russia, the campaign is being run for a fifth year. More than 45 million ribbons have been distributed throughout the world, including in Ukraine, Estonia, Germany, Britain, the United States and China.