Sara Maria Evelina Nordenstam (born 28 February 1983 in Lycksele, Sweden) is a Norwegian swimmer.
Nordenstam was born to Swedish parents and lived in Sweden until she was 10, before moving to Oslo.
Since 2004 she has been a naturalised citizen of Norway.
Nordenstam set a European record in the heats of the 200 meters breaststroke at the 2008 Summer Olympics in Beijing.
In the final she took the bronze medal with a new European record of 2:23,02, making her the first Norwegian woman to win an Olympic swimming medal.Nordenstam has 16 Norwegian championship medals.
Nordenstam studied advertising and marketing in the United States and received a bachelor's degree.