Many factors negatively affect the motherhood role. Fatigue, insomnia and depression, which are among these factors, have not been investigated together in any study. Therefore, we carried out this study to determine the effect of insomnia, fatigue and depressive symptoms on the motherhood role in primiparous mothers. In this descriptive and cross-sectional study, we included 153 women who met the inclusion criteria using the simple, random sampling method. To determine the independent variables affecting the motherhood role, we used the backward regression model. In this study, we determined that the women’s spending more energy while they performed the activities of daily living in the postpartum period, their suffering from insomnia due to baby care and their depressive symptoms affected their motherhood role by 32.6 percent. We also determined that there was a moderately significant relationship between insomnia, fatigue and depressive symptoms in the postpartum period. In particular, because depressive symptoms are the variable most related with the motherhood role (r = -0.520; p < .001), women should be followed-up regularly in the postpartum period from this aspect. It is also important to deal with insomnia in the early postpartum period, because it is a common problem in most women after childbirth.