Objectives:To evaluate the perinatal fetal outcome in correspondence with the secondtrimester scan umbilical artery coiling index in uncomplicated singleton pregnancies. Method:A prospective analytical study was performed for a duration of six months. A total of 154 Singleton pregnancies scheduled to be delivered in tertiary care centre were taken into the study. The evaluation of the umbilical cord mid-segment (free loop) included the recording of longitudinal cord images for the assessment of cord coiling. The antenatal UCI was calculated as the reciprocal of the distance between a pair of coils. After calculating the UCI, perinatal factors like meconium staining, fetal weight, and Apgar score were followed till discharge. For the classification of newborns as SGA, gestational age-specific centiles were used. The mean antenatal UCI was 0.40 with 10th and 90th centiles of 0.20 and 0.60, respectively3 . The statistical tests were the Chi-square test and assessed with SPSS version 13.0 software and statistically analyzed. A p-value of less than 0.05 was regarded as statistically significant.