Panathinaikos A.O.
Full Name	Panathinaikos Athlitikos Omilos Παναθηναϊκός Αθλητικός Όμιλος
Official Emblem
Founded	3 February, 1908
	Nicknames	Prasinoi (The Greens)
Titles	495
Anthem
Club colours	Green and White
Ground	Apostolos Nikolaidis Stadium
Chairman	Thanasis Giannakopoulos
Websites	blank">Panathinaikos F.C. Official Website Panathinaikos B.C. Official Website Panathinaikos V.C. Official Website

Panathinaikos Athlitikos Omilos (Greek: Παναθηναϊκός Αθλητικός Όμιλος, ), widely known both as Panathinaikos or PAO, is a Greek multisport club based in Athens, Greece. Panathinaikos has been largely successful throughout its history, as its teams and individual athletes have won a total of 495 officially acknowledged titles (as of March 2008) in both national and international competitions. Furthermore, it is also the largest sport club in Greece and also on an international scale, as measured by the number of different sports departments it maintains http://www.greenwebfans.com/view/el/DisplayArticle.aspx?147. In English the club's name would be Pan-Athenian Athletic Club. According to the official history of the club, Panathinaikos was founded by _George Kalafatis in 1908, when he and forty other athletes decided to break away from Panellinios Gymnastikos Syllogos following the club's refusal to form a football team.

Today, three professional teams use the Panathinaikos name — the football team, P.A.E. Panathinaikos; the basketball team, K.A.E. Panathinaikos; and the volleyball team, T.A.P. Panathinaikos. These three teams operate independently.

The club also features an amateur section whose chairman and board members are elected on a regular basis by members of the club. The current chairman is Thanasis Giannakopoulos. During its history the club has established teams in 24 different sports. In the past the club has also included teams in Field hockey, Handball, Waterskiing and Judo. Among the more recent additions has been a Synchronized swimming team, established in 1992.

In 2006, the club reached a final agreement with the Municipality of Athens and the Greek Government, to build a new comprehensive sports complex to house all of the clubs sports teams. This is intended as a replacement for the Apostolos Nikolaidis stadium and it will be built in Votanikos area, about 3km west of Athens city centre. Even though detailed plans and timetables have not yet been unveiled, construction is expected to start by the end of 2007. While it was originally expected for the complex to be ready by the end of 2008, in time to host celebrations for the club's 100th birthday, Panathinaikos officials stated their intention to host the centennial celebration at the Apostolos Nikolaidis stadium, team's historical home venue.Panathinaikos has always been the most popular Greek team with a varying 40 - 45% among the fans which corresponds to around three millions of supporters in Greece