This study assessed the effectiveness of a maternal health education package in identifying obstetric complications by pregnant women in tertiary health care institutions in Ogun state, Nigeria. The study was a quasi-experimental quantitative research that utilized both experimental and control group, convenience sampling method was used to select 20 participants for each group making a total of 40 participants and a closed ended structured questionnaire containing 63 items in 4 sections was used to gather data. Face and content validity of the instrument was ensured through vetting by experts in the field of study and reliability was established at 0.71 using Cronbach Alpha Coefficient. The study lasted for four weeks; the experimental group, after gathering of pretest data, was exposed to series of health education on causes, predisposing factors, signs and symptoms, what to do and possible complications of obstetric heamorrhage, hypertensive disorders of pregnancy and obstructed labour, after which a post test was administered. The control group was not exposed to the health education package; the researchers collected the pre test and returned 3 weeks after to gather the post test. Data retrieved from both the control and experimental group were coded and analysized using Statistical Package for Social Sciences (SPSS) version 22. Descriptive statistics were used to answer three research questions asked while student T-test was used to test the two hypotheses of the study. Findings from the analysis showed a significant difference between the pre knowledge and post knowledge of obstetric complications among the experimental group, and a significant difference between the control and experimental group on the identification of obstetric complications. The study concluded that health education given to pregnant women was effective in raising the level of awareness of women about obstetric complications, it was therefore recommended that health care givers should painstakingly provide, on continuous basis, adequate and specific information to women during antenatal visit as a way of empowering them to be on the lookout for danger signs of pregnancy.