UFC Fight Night 143: Cejudo vs. Dillashaw was a mixed martial arts event produced by the Ultimate Fighting Championship that was held on January 19, 2019, at the Barclays Center in Brooklyn, New York. A UFC Flyweight Championship bout between 2008 Olympic gold medalist in freestyle wrestling and current champion Henry Cejudo and current two-time UFC Bantamweight Champion T.J. Dillashaw headlined this event.