The Turkey national football team has represented Turkey at the FIFA Confederations Cup on one occasion, a sole appearance in 2003. Despite not being the host nation, champions of their confederation or holders of the World Cup, Turkey qualified having placed third at the 2002 World Cup as Germany (2002 World Cup runners-up), Italy (UEFA Euro 2000 runners-up) and Spain (Highest ranked UEFA member in the FIFA rankings at the time) declined to participate.
References
Turkey at the FIFA Confederations Cup Wikipedia(Text) CC BY-SA