Marko

Gymnastikos Syllogos Marko Markopoulou (Greek: Π.Α.Ε. Γυμναστικός Σύλλογος Μαρκοπούλου «Μαρκό», romanized: PAE Gymnastikos Sillogos Markopoulou "Marko", lit. 'Gymnastic Club of Markopoulo "Marko"') is a Greek football club based in Markopoulo Mesogeas. Its official founding year is 1927. Its official colors are green and white. Its emblem is a vine leaf. It uses the Municipal Stadium of Markopoulo Mesogeas as its home ground.

The club currently maintains a football department, while it previously had departments in athletics, basketball, volleyball, cycling (founded in 2016), and table tennis.

The football team belongs to the FCA East Attica and has competed for many years in the Fourth National Division and the Third National Division, while in recent years it has participated in the local championship of the FCA East Attica.