Seal Harbour is a community in the Canadian province of Nova Scotia, located in Guysborough County. Located on the east side of Isaac's Harbour, it was named for the abundance of seals once found there. Founded as a fishing settlement, it became a gold mining community with an initial discovery in the area in 1867, with further discoveries in 1892. Gold mining peaked in 1904-1907. The mines briefly reopened from 1939 to 1942 and then closed, leaving fishing and lumbering as the main industries.