Ana Ambrazienė (born April 14, 1955) is a retired hurdler from Lithuania.[1] Also known as Anna Kostecka (or Kastetskaya), she was born in Vilnius and is of Polish descent.[2][3][4] She represented the Soviet Union in the 1970s and 1980s.
Her personal best in the women's 400 m hurdles was 54.02 at a meet in Moscow on June 11, 1983. That mark was the standing world record for over a year.