Siofra O'Brien

Siofra Mary O'Brien (born 22 February 2000) is an Irish field hockey player.

Personal life
Siofra O'Brien was born and raised in Dublin, Ireland.

National league
In the Irish Hockey League, O'Brien plays for Loreto.

Under–21
O'Brien made her international debut at under–21 level. She was a member of the Irish U–21 side during a Four–Nations Tournament in Dublin. She also appeared at the EuroHockey Junior Championship in Valencia, where the team finished in seventh place.

She was also a member of the junior squad at the 2022 FIH Junior World Cup in Potchefstroom.

Senior squad
In 2022, O'Brien made her senior international debut at the FIH World Cup held in Amsterdam and Terrassa. She was initially listed as a reserve player, however was called into action following an injury to Caoimhe Perdue. She made her official debut in a ranking match against China. Later that year she appeared at the FIH Nations Cup in Valencia.

Since her debut, O'Brien has been a constant inclusion in the national squad. She has most recently been called into the squad for the 2023–24 FIH Nations Cup in Terrassa.