| Boxen | 02/24 21:00 | - | Connor Butler v Jay Harris | View | |
| Boxen | 05/05 19:00 | - | Tommy Frank v Jay Harris | View | |
| Boxen | 11/26 21:30 | - | Jay Harris v Hector Gabriel Flores | View | |
| Boxen | 06/25 21:00 | - | Jay Harris v Ricardo Rafael Sandoval | View | |
| Boxen | 10/18 20:00 | - | Jay Harris v Marcel Braithwaite | View | |
| Boxen | 03/01 01:00 | - | Julio Cesar Martinez v Jay Harris | 1-0 | |
| Boxen | 02/29 23:00 | - | Julio Cesar Martinez v Jay Harris | View | |
| Boxen | 02/29 23:00 | - | Julio Cesar Martinez Aguilar v Jay Harris | View | |
| Boxen/MMA | 10/11 19:00 | - | Jay Harris v Paddy Barnes | View | |
| Boxen/MMA | 06/01 18:00 | - | Jay Harris v Angel Moreno | View | |
| Boxen | 02/24 21:11 | - | Jay Harris v Thomas Essomba | View |
Jay Harris (born 25 August 1990) is a Welsh professional boxer. He has held the European and Commonwealth flyweight titles since 2024 and the British title since 2023. He previously held the Commonwealth title between 2017 and 2020 and the European title between 2019 and 2020. He also challenged for the World Boxing Council (WBC) flyweight title in 2020.