Public consultation on the proposal ran for three months to the end of last August and attracted 16 submissions, 14 in support, and two objecting.
Remutaka Pass will be the name of the pass only, Mrs Shaw said, and the names of Rimutaka hill, Rimutaka Range and Rimutaka Hill Road have not changed.
The New Zealand Transport Agency has placed a new sign at the summit car park of the pass at State Highway 2 between Upper Hutt and Featherston, she said, and an information board outlining the history of the road will also be updated to reflect the name change.
The earliest use of the spelling Remutaka, which translates as sitting to rest, is believed to have been reports in 1841 of visits to Wairarapa by colonial surveyors Robert Stokes and JW Child.
Wairarapa iwi authorities Rangitane o Wairarapa and Ngati Kahungunu ki Wairarapa support the name change.
More information about Remutaka Pass is available at linz.govt.nz.