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, beginning in 1988.

She won a total of 32 individual medals in international championships in a period from 1989 to 2005.

Prior to the 2004 Summer Olympics, Jacobsen was accused by FINA of using Salbutamol as a doping substance.

[2] In a 2006 interview with DR she told Jyllands-Posten that it had been legal for her to use this substance since 1993, because of her asthma.

She was suspended for half a year as a warning,[3] which was issued by LEN,[4] but never resumed swimming, because she could not compete without it.