Objective: Video-assisted thoracoscopic surgery (VATS) techniques are commonly used for surgical procedures within the thoracic cavitywith smaller incisions. There are very few regional anesthesia methods used to achieve this goal. This study aimed to investigate the effectof two fascial plane block technique rhomboid intercostal block (RIB) and serratus anterior plane block (SAPB) administered on pain scoresafter VATS.Methods: A total of 90 patients who underwent VATS were included in this study. Patients were divided in three groups: Group R (intravenous patient-controlled analgesia (IV. PCA) +RİB with (25 mL 0.25% bupivacaine; n=30), Group S (IV. PCA + SAPB with (25 mL 0.25%bupivacaine; n=30), and Group C (IV. PCA). The primary outcome was determined as a tramadol consumption amount (at hours 6, 12, and24). Postoperative pain was evaluated using the VAS (at the 30th minute, 2nd, 6th, 12th, and 24th hours) scores. Secondary outcomes included theside effect profile and additional analgesic use.Results: VAS scores of the Group R were found to be statistically significantly lower to those of Group S and Group C (p<0.05). A comparison of Groups R and S with Group C in terms of tramadol consumption amounts, at all measurement time points, revealed statisticallysignificantly lower values (p<0.005).Conclusion: As per the results of this study, we believe that RİB and SAPB administration for pain palliation after VATS is an effectiveanalgesia technique.