"These nominations will not be rejected by Unesco if we carry out a solid preparation, and Norway is being thorough," Tine Sundtoft, the country's minister for climate and environment, told Aftenposten newspaper.
The nominations include the Borre cemetery in Horten municipality, Oseberg ship burial in Tønsberg and Gokstad ship burial in Sandefjord municipality, and also the Hyllestad millstone quarries on the west coast.
First submitted by the environment ministry in 2011, they form part of Unesco's Viking Monuments and Sites series, which groups together notable viking heritage in Norway, Denmark, Iceland, Germany, Latvia, and Sweden.
Norway is also pushing for Rjukan and Notodden, two picturesque 19th century industrial towns, to win world heritage status.
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Norway already boasts seven entries on the list: Bryggen, the old wharf in Bergen; a stave church in Urnes; the mining town of Røros; stone age paintings in Alta; the villages of the Vega Archipelago; the chain of triangulation points set up by the Norwegian astronomer Friedrich Struve; and the fjords of west Norway.