Amy Ewart Costello (born 14 January 1998) is a Scottish field hockey player who plays as a defender in the Dutch Women's Hoofdklasse Hockey for HGC and for the Scotland and Great Britain national teams.

[1] Costello previously played in the German Women's Feldhockey Bundesliga for UHC Hamburg (2021-2024),[2] and in the Women's England Hockey League Premier Division for East Grinstead.

[4][5] She was included in the Great Britain squad for the women's field hockey tournament at the 2020 Summer Olympics, held in July and August 2021.

Though designated as an alternate player,[6] due to rule changes caused by the COVID-19 pandemic she was eligible to compete in all matches (unlike previous tournaments, in which alternates could only compete after permanently replacing an injured player).

This biographical article relating to a British field hockey figure is a stub.