Hamish Kilgour was last seen at Palms Shopping Mall in Christchurch on Sunday, police said in a Facebook post.
Mr Kilgour is known for co-founding Dunedin band The Clean in 1978, which became prominent as part of the Flying Nun label.
Police and Mr Kilgour’s family and friends have concerns for his wellbeing, the post said.
● Anyone with information on Hamish’s whereabouts is asked to contact police on 105 or online and quote file number 221128/8475