Introduction: Breastfeeding is a natural act and an unequalled way of providing ideal food for the healthy growth and development of infants, it is also an integral part of the reproductive process with important implications for the health of mother. Objectives: To assess the knowledge, attitude, practice of exclusive breastfeeding among the married women in Mangalore. Methodology: A cross sectional study was conducted in rural areas of Mangalore for a period of one week. In among 110 randomly selected married women to assess the Knowledge, Attitude and Practice towards breastfeeding. Results: In our study, 68 (61.8%) belongs to the age group of 20 to 40 years. Of the 110, 90% knew about the importance of colostrums but only 37.3% knew that it helps mothers to lose weight after pregnancy. Around 75.5% were aware that breast feeding can help preventing diseases affecting breast and only 47.3 % knew about its contraceptive advantage. Most of them, 60 (54.54%) women disagreed with the fact that formula-feeding is more convenient than breastfeeding, 45 (40.91%) were of opinion that formula-fed babies are more likely to gain weight more quickly and 40 (36.36%) felt formula feeding is better choice for working women. Among the study participants, only 50.9% of the participants initiated breast feeding within half an hour and only 20(22.47%) women who were home makers exclusively breastfed their babies. 44.5% and 34.5% supplemented newborn with formula to improve babies health and because breast milk was insufficient respectively and it was seen more (79.35%) among women who were literates. Conclusion: The study concludes that even though women have good knowledge and almost all have positive attitude towards exclusive breastfeeding, still not all of them are practicing exclusive breast feeding and many still supplement newborns with formula feeding even though not recommended