Background: Breastmilk provides all nutrients, immunologic agents, hormones and antibodies that protect the infant from certain diseases and infections. Many barriers can make it difficult for mothers to initiate and maintain breastfeeding. It is important that pregnant women develop a positive attitude, sufficient knowledge and proper practices to ensure breastfeeding for their newborns and consequently impact the health of the community. Method: This study aims at assessing knowledge, attitude and practices of Lebanese mothers regarding infant feeding. A cross-sectional, online survey- based study was conducted on a group of 254 Lebanese mothers to elicit data about regarding infant feeding. Statistical analysis was carried out using the statistical software SPSS, version 22.0. Descriptive statistics, bivariate analysis and multivariable logistic regression were performed to identify associated factors of good knowledge, good attitude, and good practices. Results: 78.3% of participants reported good knowledge while 21.7% showed poor knowledge, 69% reported a good attitude while 31% showed a poor attitude, and 78 (30.7%) reported good practice, while 176 (69.3%) showed poor practice. Education level and health problems during pregnancy were associated with BF knowledge (P-value less than 0.05). Age (p-value= 0.04), marital status (p-value = 0.016), educational level (p-value = 0.03), religiosity (p-value = 0.003), time since last delivery (p-value = 0.01), and knowledge score were significantly associated with attitude score. Practice scores showed a significant association with the following factors: religiosity (p-value = 0.01), family income per month (p-value= 0.012), and attitude score (p-value ˂0.0001). Conclusions: Breastfeeding education and support should be accessible to all women, especially ones with low educational qualifications and no past breastfeeding experience.