Aim and background: During various stages of a woman's life, an impact on oral health can be observed due to the hormonal changes during puberty, pregnancy, and in women with polycystic ovary syndrome (PCOS). When periodontal disease is present, it initiates a local and systemic immune process by entering the bloodstream thereby triggering a response in the placental tissues. This in turn can lead to complications in pregnancy as there is an increased risk of danger to both the mother and the fetus. It is thus important for pregnant women to be aware of this connection in order to take appropriate measures for their oral health during pregnancy. Hence, this study was conducted to assess the knowledge and awareness about adverse pregnancy outcomes and periodontitis among pregnant women. Materials and methods: The study was conducted as a cross-sectional study using a self-validated questionnaire which was sent as an online form. The data was tabulated and analyzed using the SPSS version 23.0 software. The Chi-squared test and Fisher's Exact test were used. A p-value < 0.05 was considered statistically significant. Results: A total of 161 pregnant women participated in the study. The mean age of the participants was 27.0 ± 2.7. Acid reflux/morning sickness was commonly seen in 87.6% of the participants. Seventy respondents responded that swollen gums were commonly noticed followed by bleeding gums in 51 participants. 42.9% of respondents had visited the dentist in the past 12 months and 14.3% of the participants had never visited a dentist. Conclusion: Despite pregnant women having oral changes during pregnancy, dental intervention is not commonly sought. Increasing knowledge among pregnant women about the relationship between periodontal disease and adverse pregnancy outcomes is essential for promoting better maternal and fetal health. Clinical significance: Educating and raising awareness about the link between periodontal disease and adverse pregnancy outcomes among healthcare professionals plays a vital role as they can help pregnant women to also prioritize their oral health.