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).

Litauen U20-landslaget i basketboll är det litauiska basketlandslaget för spelare under 20 år. Laget är under ledning av tränaren Rytis Vaišvila och representerar Litauen i internationella basketturneringar för ungdomar. Litauen U20 har vunnit tre EM-silvermedaljer och en bronsmedalj, samt en fjärdeplats vid VM för U20-landslag.