UFC Fight Night 228: Fiziev vs. Gamrot was a mixed martial arts event produced by the Ultimate Fighting Championship that took place on September 23, 2023, at the UFC Apex facility in Enterprise, Nevada, part of the Las Vegas Metropolitan Area, United States. A lightweight bout between Rafael Fiziev and former KSW Featherweight and Lightweight Champion Mateusz Gamrot headlined the event.

• Ultimate Fighting Championship
• Mateusz Gamrot
• Rafael Fiziev
• Bryce Mitchell
• Dan Ige
• Marina Rodriguez
• Michelle Waterson-Gomez
• Bryan Battle
• A.J. Fletcher