St Johnstone Football Club is a professional football club based in Perth, Scotland. The name of the football club derives from St. John's Toun – the old name of Perth. Although it is officially recorded as being formed in 1884, the club did not play its first game until February 1885. The club's home since 1989 has been McDiarmid Park. The club's first Scottish Cup appearance was in 1886–87 and they joined the Scottish Football League in 1911–12.
St Johnstone won the Scottish Football League First Division, the second tier of league football in Scotland, in 2008–09. This gained them promotion to the Scottish Premier League, bringing a return of SPL football to McDiarmid Park for the 2009–10 campaign, after a seven-year absence. The club have historically floated between the top two divisions of Scottish football, obtaining the reputation of being a "yo-yo club". Their traditional rivals are the two Dundee clubs, Dundee and Dundee United, with matches between St Johnstone and either Dundee club being called Tayside derbies.
The club has had limited success in cup competitions.