Abstract: The percentage of couples of childbearing age (PUS) using long-acting reversible contraceptives (LARC) family planning in 2021 in Indonesia was 11.93%, down from 12.21% in 2020. In South Kalimantan Province, the figure is below the national achievement of 7.38%, in Banjar Regency it is still low, only 4.70% use long-acting reversible contraceptives (LARC). In West Martapura Health Center, long-acting reversible contraceptives (LARC) coverage rate is also still low where only 3.78%. The purpose of this study was to analyze the knowledge and support of husbands with self-efficacy in using long-acting reversible contraceptives (LARC).