UFC Fight Night 233: Song vs. Gutiérrez was a mixed martial arts event produced by the Ultimate Fighting Championship that took place on December 9, 2023, at the UFC Apex facility in Enterprise, Nevada, part of the Las Vegas Metropolitan Area, United States. A bantamweight bout between Song Yadong and Chris Gutiérrez headlined the event.

• Song Yadong
• Chris Gutiérrez
• Khalil Rountree Jr.
• Anthony Smith
• Nasrat Haqparast
• Jamie Mullarkey
• Tim Elliott
• Su Mudaerji