The low use of Contraceptives among Nigerians has lead to increase in population growth with its attendant Consequences such as unplanned pregnancies, abortion, STIs and maternal morbidity and mortality. Several studies have been done on contraceptive use but little research attention has been focused on cultural determinants. Therefore, this study investigated Sociocultural determinants of contraceptive use among women of childbearing age in Ona Ara Local Government Area of Oyo State, Nigeria. Descriptive research design of correlational type was adopted. The respondents were selected from six wards out of eleven wards in Ona Ara Local Government Area of Oyo State, Nigeria. Purposive, disproportionate stratified and simple random sampling techniques were adopted in selecting 50 women of childbearing age from each ward with a total of 300 women of child bearing age. Socio determinants of contraceptive use (r=0.81) and cultural determinants of contraceptive use (r=0.76) scales were used for data collection. Four hypotheses were tested at 0.05 level of significance. Data were analyzed using descriptive statistics linear regression. There was a significant contribution of each of the social cultural determinants to contraceptive use. Low level of education (β=0.41), spousal approval (β=0.29), fear of side effects (β=0.17) and cultural factors (0.21) independently and significantly determined contraceptive use. Findings revealed that level of education, spousal approval, fear of side effects and cultural factors determined contraceptive use among women of childbearing age. It was therefore recommended that women education and empowerment to make informed choices about modern contraceptive use should be encouraged, while male involvement in contraceptive use should be promoted to bolstering women confidence in their reproductive decision, to curb increase in population growth in the country and improve individual health status.