INTISARILatar Belakang: Pengetahuan tentang manfaat pemberian ASI berdampak padatimbulnya motivasi ibu untuk menyusui bayi. Penelitian ini bertujuan untukmengetahui hubungan tingkat pengetahuan ibu nifas primipara post SC denganmotivasi memberikan ASI eksklusif di RS PKU Muhammadiyah Surakarta.Metode: Jenis penelitian kuantitatif menggunakan desain observasional analitikdengan pendekatan cross sectional. Teknik sampling yang digunakan purposivesampling dengan jumlah sampel 48 responden. Instrument penelitianmenggunakan kuesioner. Analisis data menggunakan uji statistik Kendal Taudengan a=5%.Hasil: Tingkat pengetahuan dan motivasi responden sebagian besar tinggi, yaitu29 responden (60,4%) dan 25 responden (52,1%). Hasil analisis korelasi KendallTau (+) 0,554 dengan p=0,000 dan r2=0,307.Simpulan: Ada hubungan antara hubungan tingkat pengetahuan ibu nifasprimipara post SC dengan motivasi memberikan ASI eksklusif di RS PKUMuhammadiyah Surakarta.Kata kunci : Pengetahuan, Motivasi, ASI EksklusifABSTRACTBackground: Knowledge about benefit to giving exclusive breast feeding hasimpact on the motivation mother to giving exclusive breast feeding to the baby.This research correlation between knowledge’s level of woman’s primiparouspuerpueral post SC and the motivation giving exclusive breast feeding in PKUMuhammadiyah Surakarta Hospital.Method: This research quantitative used observasional analitik’s design withcross sectional’s approach. Sampling’s technique which used purposive samplingwith the sample of research were 48 respondent. Research’s instrument usedquestionnaire. They were then analyzed by using the Kendal Tau statistic witha=5%.Result: Level of knowledge and the motivation of respondents were largely,specifically 29 respondent (60,4%) and 25 respondent (52,1%). Result of theanalyzed by using the Kendall Tau correlation (+) 0,554 with p=0,000 andr2=0,307.Conclusion: There is correlation between knowledge’s level of woman’sprimiparous puerpueral post SC and the motivation giving exclusive breastfeeding in PKU Muhammadiyah Surakarta Hospital.Kata kunci : Knowledge, Motivation, Exclusive Breast Feeding