Maternal obesity is significantly associated with less intention to breastfeed, low breastfeeding self-efficacy, and poor breastfeeding outcomes. This cross sectional study investigates the determinants of breastfeeding self-efficacy among overweight and obese pregnant mothers using self-administered validated questionnaires. There were 44.9% of overweight and obese from 200 recruited mothers. They had low breastfeeding self-efficacy and less intended to breastfeed as compared to normal-weight mothers. Past breastfeeding experience and exclusive breastfeeding inten- tion are predictors of breastfeeding self-efficacy among overweight and obese pregnant mothers. Effective strategies should be conducted targeting this population with regards to low self-efficacy and intention to breastfeed.