Siren Sundby (born 2 December 1982 in Lørenskog) is a former Norwegian sailor.

[1] Sundby was selected female sailor of the year by the International Sailing Federation in 2003.

She lives in Oslo with her husband, Christopher Gundersen, who is a sailor.

She has a Bachelor of Science in Engineering from Technical University of Denmark, 2008, and is attending her final year of the Master program, Innovation and Entrepreneurship, 2011, at BI Norwegian Business School in Oslo.

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