Magali Di Marco Messmer (born 9 September 1971 in La Chaux-de-Fonds, Switzerland), is one of the most seasoned professional elite triathletes and part of the Swiss National Team since 1995.

In 2000, she crowned her efforts by winning the bronze medal at the Olympics in Sydney, whereupon she retired temporarily from triathlon.

Living in Monthey together with her husband and working as a manager in an insurance company, she dedicated herself to family life and gave birth to her son Eliah on 2 November 2001.

At the end of the year 2004, however, Magali Di Marco hd her comeback to triathlon and in 2005 she achieved several World Cup top ten positions.

In the 15 years from 1995 to 2009 Magali Di Marco Messmer took part in 73 ITU competitions and achieved 43 top ten positions.