The Eternal derby of Slovenian football, simply known as the Eternal derby (Slovene: Večni derbi) or Slovenian derby (Slovene: Slovenski derbi), is a football rivalry between NK Maribor and NK Olimpija Ljubljana. The match between the two rivals was first contested on 24 October 2007 in a quarter-final match of the Slovenian Cup, which was won by Maribor 3–1.