Background: Gastric residual and regurgitation are common problems in preterm infants. Body position affects the gastric emptying rate and feeding regimen manipulation have been shown to affect the episodes of regurgitation. Aim: to investigate the effect of right position during and after on gastric residual volume and regurgitation episodes among preterm infants. Method: a quasi-experimental design was utilized. A convenient sample of 90 preterm infants on gavage feeding was randomly allocated into three groups (30 supine position, 30 right 1 position after feeding time and 30 right 2 position during and after feeding time). The study was conducted at