Background World Health Organization (WHO) recommends breastfeeding as the appropriate method of infant feeding. Pre delivery intentions about breastfeeding are strong predictors of both initiating and continuing exclusively breastfeeding through the post delivery period.Objective To determine the association of age, education,occupation, parity, and information got by pregnant women with the intention to give exclusive breastfeeding at Siloam Lippo Cikarang Hospital.Methods Pregnant women were chosen by consecutive sampling filled in questionnaires contained identity, knowledge, obstacles of breastfeeding and intentions to exclusively breastfeed. Pregnant women visiting Obstetrics and Gynecologic Department Siloam Lippo Cikarang Hospital who were able to read and write in Indonesian were eligible for this study.Result: Most of the 200 respondents were between 20-30 years ofage (69.5%), college graduated (55.5%), working women (50.5%),multiparous (58.5%) and have already got the information about breastfeeding (64.5%). The commonly cited source is printed device (40%). Knowledge about breastfeeding in general were good (78%), but respondents who intended to exclusively breastfeed were only 58.5%. Multivariate analysis showed that the factors significant associated with the intention to exclusively breastfeed were age, with OR 0.9 (95%CI 0.84;0.98, P<0.05) and information, with OR 0.28 (95%CI 0.143;0.56, P<O.OOl). Conclusions The significant influencing factors to the intentions to give exclusively breastfeed are age and information.