Background and Aim Consanguinous marriage is common in Jordan and in middle east in general. the aim of the study was to seee the effect of consanguinity on pregnancy outcome in east Amman. (capital).

Patients and Methods Mothers in the post natal ward were interviewd and a special questionarre was filled. they were asked whether marriage was consanguinous or not, data was collected regarding no of pregnancies, abortions, still birth,& intrauterine fetal death, multiple pregnancies, neonatal deaths, infant deaths, & low birth weight babies.

Results The study included 190 mothers of consanguinous marriage and 320 non consanguinous. there was no statistically significant relation between consanguinity and no of pregnancies, abortions, stillbirths or multiple pregnancies.however there was a statistically significant relation between consanguinity and nneonatal deaths, infant deaths and low birth weight babies.

Conclusion Consanguinity has an adverse effect on pregnancy and neonatal outcome and should be considered as a factor in high risk pregnancy, the neonatologist and obstetrician should be alerted to.