Louis de Quaasteniet was last seen walking from his home at Chapel Hill, Rototuna at 9am on Sunday. If you see him call police on 07 858 6200.

A man with dementia who earlier went missing has been found.

A search was launched for Louis de Quaasteniet​ after he left his house in Rototuna early Sunday morning.

The 80-year-old suffers from dementia and was not meant to go out walking alone.

Around 9am, while his wife Joy was still in bed, he snuck out of the couple's Chapel Hill home to go for a walk and failed to return.

A neighbour at the intersection of Chesterfield St said she saw de Quaasteniet, who waved to her about 9.30am, neighbour Jenny Collings said.

He was wearing blue jeans, a long sleeved t-shirt, glasses and brown shoes.

He did not take a phone or wallet, and was not wearing his medical tracker, which he typically wears.

Having only recently moved to Hamilton from Whangamata to be closer to the hospital and family, the retiree has little knowledge of the area, walking tracks or streets, she said.

But by 3pm the elderly man had been found "safe and well".