Mette Jacobsen (born 24 March 1973 in Nakskov) is a former freestyle and butterfly swimmer from Denmark who competed in five consecutive Summer Olympics for her native country, starting in 1988. Her final breakthrough came in 1995, when she won two titles at the European LC Championships in Vienna, Austria: in the 100 m backstroke and in the 100 m butterfly. Many medals followed, especially in the short course (25 m) championships.