Ακράτητος Άνω Λιοσίων) is a Greek football professional club from Ano Liosia, Athens, Greece.

Akratitos spent their first years in relative obscurity, until they rose from the lower ranks to the top flight under the managership of Giannis Pathiakakis, who died on the pitch during a training session in 2002.

[1] Akratitos spent 3 consecutive seasons (2001-02 until 2003–04) in the Alpha Ethniki[2] before being relegated in 2004 after losing a relegation match against Ergotelis which took place in Makedonikos Stadium, Thessaloniki.

[2] The 2005-06 season was meant to be their last in the Greek top-flight, as they finished last and were relegated again to the Beta Ethniki,[2] but they decided to withdraw from the professional leagues completely and were automatically demoted to the Delta Ethniki.

[4] During that season they also achieved the lowest attendance ever in the Alpha Ethniki, with only 26 spectators watching their home game against Skoda Xanthi.