Whanganui MP Harete Hipango has picked up the Crown Māori Relations portfolio in a rejigged National Party caucus under new leader Todd Muller.
"It's a significant portfolio and one that is usually passed on to senior members of Parliament," she said.
"I've studied and practised the law, and engaged in Crown government agencies as well as a lot of community-based Maori organisations.
She will continue the role she has as the party's Māori tourism spokeswoman.
Hipango said there would always be "a transitional period" when leadership changed in a political party.