The self-efficacy of breastfeeding mothers is the mother's confidence in her ability to breastfeed optimally and sustainably. Husband's support as a form of social support is suspected to play a role in increasing the confidence of breastfeeding mothers. However, exclusive breastfeeding coverage in the work area of the Cibeber Health Center in Cimahi City is still low (59.65%) compared to the city's achievements, so a study is needed related to the factors that affect it. This study aims to determine the relationship between husband support and the self-efficacy of breastfeeding mothers in the working area of the Cibeber Health Center, Cimahi City in 2026. The research uses a correlational analytical design and a cross-sectional approach. The total sampling technique was used to select 53 breastfeeding mothers aged 0–6 months as samples. The research instruments consisted of a spouse support questionnaire and a Breastfeeding Self-Efficacy Scale-Short Form (BSES-SF) questionnaire. Reliability and validity tests were carried out and declared satisfactory. Chi-Square test to analyze the data. The results showed that the husband's support was less than half in the good category (41.5%) and the mother's self-efficacy was less than half in the high category (45.3%). The chi-square test did not show a significant association between maternal self-efficacy in breastfeeding and partner support (p>0.05). The p-value is 0.389. This study concluded that there was no correlation between maternal efficacy in breastfeeding and partner support. It is recommended that health workers continue to involve couples in breastfeeding education and that future researchers investigate additional factors that affect the self-efficacy of breastfeeding mothers.