Ana Ambrazienė (14 April 1955 – 12 February 2025)[1] was a hurdler from Lithuania.

[2] Also known as Anna Kostecka (or Kastetskaya), she was born in Vilnius and was of Polish descent.

Her personal best in the women's 400 m hurdles was 54.02 at a meet in Moscow on 11 June 1983.

That mark was the standing world record for over a year.

This biographical article relating to Lithuanian athletics is a stub.