Kjersti Plätzer

Kjersti Tysse Plätzer (born Tysse; 18 January 1972) is a Norwegian race walker, who won the silver medal at the 2000 Summer Olympics in Sydney, in the 20 kilometres race. She finished 12th in the same race in the 2004 Olympic Games in Athens and 4th in the 2007 World Championships in Osaka. At the 2008 Summer Olympics in Beijing, she again won a silver medal in the 20 kilometres race.

Born in Os, Hordaland, she is the older sister of Erik Tysse and is married to former German middle distance runner Stephan Plätzer, who is also her coach. They have two children, Kiara Lea and Sebastian.