The 2019 Liga 1 U-20 was the ninth edition of the Indonesia Junior Level League system since its introduction in 2008 and the first of the Elite Pro Academy since being changed from an under-19 to under-20. The season started on 20 July and finished with a final on 12 October 2019. Persebaya U20s won the title on 12 October 2019 after defeating Barito Putera U20s 3–0 on penalties after 3–3 draw until extra time in the final.