Ana Ambrazienė

Ana Ambrazienė (born April 14, 1955) is a retired hurdler from Lithuania. Also known as Anna Kostecka (or Kastetskaya), she was born in Vilnius and is of Polish descent. 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.