Sæby

thumb|upright|left|Seal of Saeby, 1584, by J.Th Hansen Sæby () is a town and seaport located on the east coast of the historical region of Vendsyssel on the North Jutlandic Island in northern Denmark. The town is located in Frederikshavn municipality in Region Nordjylland. It has a population of 8,991 (1 January 2025). Sæby was granted market rights in 1524.