Objective: Evaluate the effect of individual counseling intervention on weight management based on Stages of Change Model conducted on infertile women Methods: This study consisted of two stages: counseling and follow-up. The research population consisted of 146 infertile women who applied to the in vitro fertilization center of a state hospital in İzmir between January 4, 2019, and June 22, 2019. Among the 104 infertile women who met the inclusion criteria and declared their willingness to participate in the study, 51 women constituted the intervention group, and 53 women constituted the control group. While an individual counseling program based on Stages of Change Model was conducted on the initiative group, the control group was followed routinely. Research data were analyzed using SPSS 22.0 software. Results: Most recent follow-up anthropometric values of infertile women in the intervention group were lower compared to the pre-follow-up values. The difference between these two data was statistically significant (p = 0.000). Infertile women in the intervention group tended to increase their consumption of daily milk and dairy products and vegetable and fruits in their most recent follow-up stage compared to that in the pre-follow-up stage, whereas their consumption of and daily calories from meat products, sugary products, fats, cereals, and bread decreased. The difference between these two data was statistically significant (p = 0.000). Conclusion: Individual counseling intervention based on Stages of Change Model aiming to evaluate the weight management caused infertile women to adopt healthy behaviors in terms of physical activity and nutritional habits.