The Lithuania men's national under-20 basketball team (Lithuanian: Lietuvos nacionalinė vaikinų jaunimo iki 20 krepšinio rinktinė), is the representative for Lithuania in international basketball competitions, and it is organized and run by the Lithuanian Basketball Federation. The Lithuania men's national under-20 basketball team represents Lithuania at the FIBA Europe Under-20 Championship. The 2012 FIBA Europe Under-20 Championship champions generation (born 1992), led by Jonas Valančiūnas, won every single age-restricted tournament they have competed in. No other generation in the world have shown such impressive performance. Consequently, the unique Lithuanian generation was nicknamed "Auksinis Lietuvos jaunimas" (English: The Golden Lithuanian Youth).

立陶宛 20 歲以下籃球隊代表立陶宛參加國際 20 歲以下籃球比賽。該隊由立陶宛籃球聯合會管理,參加過多屆國際籃聯 20 歲以下歐洲錦標賽和國際籃聯 20 歲以下世界盃。球隊取得的最佳成績是 2021 年國際籃聯 20 歲以下歐洲錦標賽冠軍和 2017 年國際籃聯 20 歲以下歐洲錦標賽亞軍。