Joan Warren left her seniors' residence in the 900 block of Lynn Valley Road in North Vancouver at 9 a.m. PT Friday morning. She suffers from dementia.
With temperatures below freezing, RCMP and North Shore Rescue say they are worried about her well-being and are asking area residents to check their carports, garages, and yards.
Members of North Shore Rescue are searching in the Lynn Canyon area.
Warren is described as a Caucasian female, about 5 feet 8 inches tall and slim.
She was last seen wearing a turquoise jacket and black pants and is capable of walking unassisted.