Objective: The aim of the study was to determine the attitudes and the knowledge of gynecologists in the Republic of Croatia on oral health care during the pregnancy and the association of periodontal disease with the pregnancy outcomes. Materials and methods: The specialists and residents of obstetrics and gynecology in Republic of Croatia were involved in this cross-sectional study. The survey was conducted by a questionnaire which consisted the questions on general demographic data and issues related to the attitudes of gynecologists to oral health care of pregnant women. Results: 59.09 % of gynecologists showed good knowledge about the association between the oral health and pregnancy. Gynecologists' knowledge of the oral health of pregnant women depends on the level of education and the main source of information. Conclusion: There are certain misconceptions among the gynecologists about the safety of providing dental treatment during the pregnancy. Additional collaboration between gynecologists and doctors of dental medicine is essential in order for every pregnant woman to receive a satisfactory level of dental care and proper education on the preservation of oral health.