Background: With respect to prevalence of unwanted pregnancy and lack of information on its risk factors in rural population at risk, the current study was carried out on rural women of Najafabad to determine prevalence of unwanted pregnancy and its risk factors in 1997.

Materials and Methods: In this cross-sectional study, 788 pregnant women of studied area enrolled. Samples were randomly selected. Unwanted pregnancy, age, method of contraception, tendency to abortion, history of unwanted pregnancy and other relevant factors were asked. Data were analyzed using descriptive statistics.

Results: Of 788 studied women, 42% had unwanted pregnancy. Place of receiving family planning services, method of contraception and taking OCP played main role in unwanted pregnancy.

Conclusion: Prevalence of unwanted pregnancy is dangerously high. More studies on the causes, as well as interventional studies in order to control them, are recommended.