Objective: to analyze the suicide mortality trend in Brazilian adolescents from 1997 to 2016. Method: ecological study of time series; Prais-Winsten regression was used. Results: 14,852 suicide deaths were recorded, with mortality rates per 100,000 inhabitants of 1.95 in 1997, 2.65 in 2016 and average of 2.14 in the period 1997-2016; deaths predominated in males (67.59%), due to intentional self-harm (84.19%) a...