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Objectives/hypothesis: This study aimed to elucidate the role of elective neck dissection (END) in improving the outcome of T3cN0M0 glottic squamous cell cancer (GSCC).Study Design: Retrospective population-based database analysis.Methods: Patients with T3cN0M0 GSCC in the Surveillance, Epidemiology, and End Results database (SEER) were extracted and stratified into END and non-END cohorts. Propensity score matching (PSM) was used to eliminate the baseline variations. The Kaplan-Meier method was performed to access the association between END and survival.Results: We retrospectively analyzed 1,589 T3cN0M0 GSCC patients in the SEER database from 2004 to 2015, and found that only 22% to 58% T3cN0M0 GSCC were performed with END. After PSM, END cohort had better overall survival (OS) (median survival time: 93 vs. 55 months, respectively; P = .0047) and cancer-specific survival (CSS) (hazard ratio [HR] 0.48, 95% confidence interval [CI] 0.29-0.77, P = .003) than non-END cohort. In addition, Subgroup analysis also indicated END cohort had better OS or CSS than non-END cohort.Conclusion: This study demonstrated that in patients with T3cN0M0 GSCC, END significantly associated with better survival outcomes compared with non-END.Level Of Evidence: 3 Laryngoscope, 132:1807-1816, 2022. [ABSTRACT FROM AUTHOR]