Ann-Margreth Frei, Frei-Käck,[2] or Frei-Hall,[3] (born March 20, 1942)[1] is a Swedish former competitive figure skater.

She is a two-time Nordic champion and a three-time Swedish national champion.

She competed for Sweden at the 1964 Winter Olympics in Innsbruck, placing 21st.

[1] Frei lived in Switzerland from the age of six to 18.

[4] As of 2016, she is a coach at the Skating Club of Vail in Vail, Colorado.