Use JR Pass in Nikko

We plan to visit Nikko on one day trip, using JR pass for tourist from Tokyo to Nikko. From JR Nikko Staion, we would like to go Oku Nikko park. I wonder if we can use JR pass to go to the park (bus/train...) to save the money, or must buy another kind of ticket?

From JR Nikko Staion, we would like to go Oku Nikko park. I wonder if we can use JR pass to go to the park (bus/train...) to save the money, or must buy another kind of ticket?

No, the Japan Rail Pass is not valid on any buses or non-JR trains in the Nikko area.

The JR East Pass and JR Kanto Area Pass, however, are valid on local Tobu trains between Tobu-Nikko, Shimo-Imaichi and Kinugawa.

If you are talking about the bus to get to Oku Nikko area, the bus is operated by Tobu (a non-JR company), and they have a Tobu bus pass that you can buy at Tobu Nikko station. A return trip on the bus to Yumoto and back to Nikko station pays off already.