The Lebanon national under-20 football team (Arabic: منتخب لبنان تحت 20 سنة لكرة القدم) is the national under-20 football team of Lebanon and is controlled by the Lebanese Football Association. The team also serves as the national under-19 and national under-18 football teams of Lebanon.

While the team has never qualified for the FIFA U-20 World Cup, they have participated twice in the AFC U-20 Asian Cup, in 1973 and in 2008, with their best result being reaching the quarter-finals in the 1973 edition. In the 2021 WAFF U-18 Championship, the U18 team made history by becoming the first Lebanon men's national team to reach a final, losing to hosts Iraq on penalty-shootouts. They also participate in the Arab Cup U-20 and Jeux de la Francophonie, failing to go past the group stage in both competitions.

Notable former under-20 players include Nour Mansour, Rabih Ataya, and Mohamad Haidar, who all went on to play for the senior side.

黎巴嫩 20 歲以下足球隊(阿拉伯語:منتخب لبنان تحت 20 سنة لكرة القدم‎;英語:Lebanon national under-20 football team)是黎巴嫩足球協會管理的國家男子 20 歲以下足球隊(英语:National under-20 football team),代表黎巴嫩參加國際足球賽事,例如亞足聯 U-19 錦標賽。