Aim: This research was conducted to determine the levels of e-health literacy and healthy lifestyle behaviors of pregnant women and the factors associated with them. Method: The descriptive study was conducted with 267 pregnant women online via social media platforms. The research data were collected with the "Pregnant Identification Form", "E-Health Literacy Scale (EHLS)" and "Healthy Lifestyle Behaviours in Pregnancy Scale (HLBPS)". Data were evaluated with "independent sample t test, one-way analysis of variance, Tukey HSD test, Pearson correlation analysis". Results: The mean EHLS score of pregnant women was found to be 30.51±4.83 and the total mean score of HLBPS was found to be 113.99±13.15. It was found that women who do not have any complaints about pregnancy, those who think that they receive adequate health services during pregnancy and those who have knowledge about health, care for themselves and their baby during this process, those who consult health professionals about the accuracy of the information obtained from the internet/social media, and those who think that it is important to access health resources related to the pregnancy process on the internet had more e-health literacy and healthy lifestyle behaviors during pregnancy (p<0.05). A very weak and weak positive correlation was determined between EHLS and HLBPS total scores of the pregnant women and their HLBPS sub-dimensions (p<0.01). Conclusion: E-health literacy and healthy lifestyle behaviors in pregnant women; it was found to be slightly above moderate (good). As the e-health literacy levels of pregnant women increased, healthy lifestyle behaviors during pregnancy increased.