This research article uses annual time series data of adolescent fertility rate for the DRC from 1960 to 2020 to predict future trends of adolescent fertility rate over the period 2021 to 2030. The study utilizes Holt’s linear exponential smoothing model. The optimal values of smoothing constants α and β are 0.9 and 0.3 respectively based on minimum MSE. The results of the study indicate that annual adolescent fertility will continue to decline but remain very high throughout the out of sample period. Therefore, we encourage authorities in the DRC to allocate more resources towards adolescent health in order to facilitate setting up of adolescent friendly clinics, funding of awareness campaigns and ensuring the availability of medical supplies that are required in the sexual and reproductive health program.