Ciara Mageean (/ˈkɪərə məˈɡiːən/ KEER-ə mə-GHEE-ən;[2] born 12 March 1992)[3] is a middle-distance runner from Portaferry in Northern Ireland who specialises in the 1500 metres.

[5][3] Mageean was coached by former Irish athlete and friend Jerry Kiernan, who she credits for her recovery after serious ankle injuries.

[3] In Bern, Switzerland, on 24 July 2020, Mageean became the first Irish woman to run sub-two minutes for the 800 m, adding to her mile and 1500 m national records.

[15][16] On 2 September, the 30-year-old earned her first Diamond League victory, winning her specialist event at the Brussels' Memorial Van Damme ahead of Muir.

Mageean broke the four-minute barrier for the first time, and Sonia O'Sullivan's Irish record set in 1995, by more than two seconds.

[26] Mageean was awarded a UCD Ad Astra Elite Athlete Scholarship and graduated from University College Dublin with a BSc in Physiotherapy in 2017.