2019 U.S. Open Nine-ball Championship

The 2019 US Open 9-Ball Championship was an international pool tournament in the discipline 9-Ball, held from 21–26 April 2019 in Las Vegas, United States. It was the 43rd entry of the U.S. Open 9-Ball Championships. Germany's Joshua Filler won the event with a 13–10 final victory against Wu Jiaqing to win his first US Open championship.

The defending champion was Jayson Shaw, however Shaw was defeated by Filler in the last 16.

Tournament format
The tournament was played as a double-elimination tournament and as a to 11 under  rules. The event featured a full roster of 256 players.

Prize fund
The tournament prize fund was a total of $300,000 with the winner receiving $50,000.