Background: Nesting and swaddling are supportive, comfortable, and protective techniques that assist preterm neonates' self-regulation, maximize their stability, preserve energy, improve growth, and promote neurobehavioral organization. Objective: This study aims to determine the effect of nesting and swaddled position on preterm neonates' behavioral readiness and feeding progression. Subjects: A quasi-experimental design was used to accomplish this study. A convenient sample of 80 preterm neonates was divided into two equal groups: the control group was subjected to hospital routine care, and the study group was subjected to nesting and swaddling positions in addition to hospital routine care. Tools: Three tools were used to assess necessary data. "Tool One: Characteristics and Clinical Data of Preterm Neonates Assessment Record". Tool two: "Feeding Behavioral Readiness Skills Assessment Record Prior to and During Feeding" Tool Three: "Preterm Neonates Feeding Progression Assessment Record". Results: Significant statistical differences were found in preterm neonates oral feeding behavioral readiness skills prior to and during feeding among both groups (P≤0.005). Moreover. There was also a statistical significant increase in mean body weight and the amount of milk consumed over the four weeks (p =0.001) for both groups. Conclusion: Preterm neonates supported by nesting and swaddling positions have better behavioral readiness and feeding progression than those who do not. Recommendations: Using the nesting and swaddling positions as regular forms of developmental care for all preterm neonates receiving care in NICUs. Educational programs are recommended in order to enhance the knowledge and practice of NICU nurses regarding developmental supportive positioning.