Ethnikos Piraeus F.C. is a Greek football club based in Piraeus and its parent sports club is Ethnikos OFPF. The club was officially formed on 21 November 1923 as Keravnos Piraeus, but existed unofficially since 1922. One year later the club was renamed to Young Boys Titan, after some players' secession that formed Peiraikos Podosfairikos Omilos. The club was renamed to Ethnikos on 23 December 1924, after it merged with Peiraikos Podosfairikos Omilos.

The Georgios Karaiskakis Stadium, commonly referred to as the Karaiskakis Stadium, is a football stadium in Piraeus, Attica, Greece, and the home ground of the Piraeus football club Olympiacos. It is named after Georgios Karaiskakis, a military commander and national hero of the Greek War of Independence, who was mortally wounded in the area.