Fabiana Bytyqi (Albanian pronunciation: [byˈtyc͡çi], born 30 December 1995) is a Czech professional boxer of Kosovan descent.

[5] Fabiana Bytyqi made her professional debut on 7 March 2015 at the Maritim Hotel in Magdeburg, Germany against Andrea Jenei.

[6] Bytyqi won her next five fights before being booked to face Teodora Bacheva for the vacant WBC Youth female minimumweight title.

[14] Bytyqi would next face Fatuma Yazidu for the vacant WBC Silver female minimumweight title on 2 December 2017.

Castle entered the bout following a four-year long absence from the sport of boxing, with her sole loss coming against Momo Koseki in her first WBC title fight.

[29] Bytyqi won a rematch with Lopez Corzo held at Sono Centrum, Brno, Czech Republic on 15 April 2023 by unanimous decision.

[30] Bytyqi lost her title to Tina Rupprecht via unanimous decision in a fight at Verti Music Hall, Friedrichshain, Germany on 13 January 2024.

[31][32] Bytyqi was scheduled to challenge IBF female atomweight World champion Sumire Yamanaka at Olympiastuetzpunkt, Heidelberg in Germany on 23 November 2024.