The RNC is asking the public for help in finding 57-year-old James Dillon.
Dillon was last seen Sunday in the area of Waterford Bridge Road in St. John's.
He is described, as having a stocky build, is 178 cm, 93 kg with short graying hair and blue eyes.
At the time of his disappearance he was unshaven, wearing white sneakers, red plaid shirt and green khaki pants.
Anyone who has any information pertaining to his whereabouts is asked to contact the RNC at 729-8000.