| PFL 9 | |
| Promotion: | Professional Fighters League |
| Venue: | Mandalay Bay Events Center |
| City: | Las Vegas, Nevada |
| Previousevent: | PFL 8 |
| Followingevent: | PFL 10 |
See main article: PFL (2019 season). The PFL 9 mixed martial arts event for the 2019 season of the Professional Fighters League was held on October 31, 2019, at the Mandalay Bay Events Center in Las Vegas, Nevada.
The event was the ninth of the 2019 season and marked the start of the playoffs for the Heavyweight and Light Heavyweight divisions.[1]