Mjøndalen IF was one of 494 clubs from Norway that had teams playing during Norway Cup 2018. They participated with one team in Stjerneklassen 7-er D.

In addition to Mjøndalen IF, 5 other teams played in Stjerneklassen 7-er D. They were divided into 2 different groups, whereof Mjøndalen IF could be found in Group 1 together with Nordstrand IF and Korsvoll IL.

Mjøndalen IF made it to Playoff A after reaching 1:st place in Group 1. Once in the playoff they made it all the way to the Final, but lost it against Vear IF with 2-8. Thereby Mjøndalen IF finished second in Stjernene -D Playoff A during Norway Cup 2018.

Mjøndalen comes from Mjøndalen which lies approximately 46 km from Oslo, where Norway Cup takes place. The area around Mjøndalen does also provide 30 additional clubs participating during Norway Cup 2018 (Among others: Strømsgodset Toppfotball, Holmestrand IF, Skrim, IL, Jutul, IL, Asker Fotball, Stabæk Fotball, Hyggen IF, Nærsnes & Åros IF, Hvalstad IL and Bærums Verk Hauger IF).