The 2019 One80 L-style World Masters was a major tournament on the BDO/WDF calendar for 2019. It took place from 23 to 28 October at the Circus Tavern in Purfleet, Essex, which is the former PDC World Darts Championship stage. John O`Shea won his first major title with a 6 sets to 4 win over Scott Waites. He became the third non-seeded World Master in three consecutive years. The youth tournaments were won by Keane Barry and Katie Sheldon of the Republic of Ireland. It was the first time three Irish players won the Singles tournaments of the World Masters.