| Venue: | Ruka, Finland |
| 2015 Nordic Opening | |
| Series: | 2015–16 FIS Cross-Country World Cup |
| Date: | 27–29 November |
| Stages: | 3: Sprint 5/10 km 10/15 km C Pursuit |
| Menfirst: | Martin Johnsrud Sundby |
| Menfirst Nat: | NOR |
| Mensecond: | Petter Northug |
| Mensecond Nat: | NOR |
| Menthird: | Finn Hågen Krogh |
| Menthird Nat: | NOR |
| Womenfirst: | Therese Johaug |
| Womenfirst Nat: | NOR |
| Womensecond: | Stina Nilsson |
| Womensecond Nat: | SWE |
| Womenthird: | Ingvild Flugstad Østberg |
| Womenthird Nat: | NOR |
| Previous: | 2014 |
| Next: | 2016 |
The 2015 Nordic Opening or the fifth Ruka Triple was the 6th edition of the Nordic Opening, an annual cross-country skiing mini-tour event. The three-day event was the first competition round of the 2015–16 FIS Cross-Country World Cup.
The winners of the overall standings were awarded 200 World Cup points and the winners of each of the three stages were awarded 50 World Cup points.
A total of 350 points was possible to achieve if one athlete won all three stages and the overall standings.
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| Stage | Men | Women | |||
|---|---|---|---|---|---|
| Winner | Overall standings | Winner | Overall standings | ||
| 1 | Sondre Turvoll Fossli | Sondre Turvoll Fossli | Maiken Caspersen Falla | Maiken Caspersen Falla | |
| 2 | Martin Johnsrud Sundby | Martin Johnsrud Sundby | Therese Johaug | Therese Johaug | |
| 3 | Niklas Dyrhaug | Therese Johaug | |||
| Final | Martin Johnsrud Sundby | Final | Therese Johaug | ||