Abstract Background Pain is an everyday challenge during all surgeries and it is a chief postoperative complication, so pain management is a corner stone in anesthetic practice. Ultrasound guided nerve block is considered a recent technique for pain management. It provides better visualization of the nerves and reduces the risk for complications. Aim of the Work The present study was designed to assess the analgesic efficacy of ultrasound guided Erector Spinae Plane Block done at the fifth thoracic transverse process level in patients undergoing VATS surgeries for postoperative analgesia. Patients and Methods This prospective randomized clinical study was conducted in Ain Shams University Hospitals. It included a total of 60 adult patients aged 21-60 years, Scheduled for VATS surgeries. Patients were randomly divided into two equal groups 30 patients each. The ESPB group (n = 30): received ESPB after induction of anaethesia, while the Control group (n = 30): received only fentanyl 1- 2 mcg/kg during induction of anesthesia and additional boluses of fentanyl.5 mcg/kg were given according to the patient’s vital data. Results The main finding in this study was that ultrasound guided ESPB provided a good analgesic effect in patients undergoing VATS surgery, it also reduced the need for rescue analgesia and the total amount of postoperative opioid consumption in comparison to controlled group, Prolonged the time to first request of analgesia, allowed early mobilization, Increase patient satisfaction in 1st 24 hour and Decrease incidence of nausea and vomiting. Conclusion Ultrasound-guided erector spinae plane block was found statistically significantly in reducing postoperative opioid consumption, alleviating postoperative pain scores and improving patients’ satisfaction in the first 24 hours after VATS surgeries, without associated adverse effects as postoperative nausea and vomiting, nerve injury, respiratory depression and hematoma formation.