Palmerston North police are appealing for sightings of Paul Tremewan.
Tremewan, 69, was reported missing from his address in Hokowhitu.
Police said he was around 155cm-165cm tall with a slim build.
When he was last seen yesterday he was wearing a brown jersey with dark fleecy trousers and black sneakers.
Police said Tremewan had some health issues and they had concerns for his wellbeing.