They beat Meath 2-19 to 1-15
The Louth footballers are the Dalata Hotel Group Leinster under-20 champions for the first time since 1981.
The Wee County were 2-19 to 1-15 winners over Meath in Newbridge last night.
Mayo claimed the honours in Connacht with a 2-17 to 4-8 win over Roscommon in Tuam.
Tyrone saw off Donegal in extra-time in the Ulster final, on a scoreline of 1-19 to 2-14 in Owenbeg.

Ireland's Women's Football Team To Face Poland In World Cup Bid
Wednesday's Sport Update
FIFA President Infantino Under Pressure After Receiving An Undeclared Salary Of Over A Million In 2024
Arsenal And Manchester United Face Injury Problems Ahead Of Champions League Clashes
World Cup-winning Coach Jack White Appointed Head Coach Of Fiji's Rugby Team
F1 Announces First Race In South Africa Since 1993 After Years Of Advocacy From Lewis Hamilton
Tuesday Morning Sports Update
F1 Could Crown Youngest Formula One World Champion In Antonelli In A Fortnight