The aim of this study was to evaluate pregnant women’s sexual function and marital adjustment. The sample of the study included 298 women, and it was evaluated using Golombok Rust Inventory of Sexual Satisfaction (GRISS) Scale and Marital Adjustment Scale. The most important reasons for decreasing the frequency of sexual intercourse included the fear of harming the fetus during intercourse (62.1%), fear of having miscarriage (47.8%) and decreased sexual desire (34.7%). It was found that women with sexual dysfunction had a significantly lower educational level, were living with three or more people in their home, were multiparious, had an unplanned pregnancy, reported pain during sexual intercourse and felt that their sexual life was very affected during pregnancy. The findings of the study showed that women had ≥ 5 points for GRISS for the subscales as follows: infrequency (47.3%), non-communication (57.4%), dissatisfaction (15.4%), avoidance (6.4%), non-sensuality (19.1%), vaginismus (28.9%), anorgasmia (29.9%) and sexual dysfunction (17.4%). In conclusion, women who were living with three or more people at home, had lower income level, were smoking and had an unplanned pregnancy scored under 43.5 of MAS. It was found negative and there was a medium correlation between MAS score and total GRISS score.