This cross-sectional analytical study aimed to investigate the possible association between extended high-frequency hearing and mastoid pneumatization. A total of 206 patients were involved in the study, and a statistically significant difference was found that the patients with higher mean mastoid volume had a response to that particular frequency when compared to patients with lesser mean mastoid volume in both the right and left ear. However, there was no statistically significant association between various age groups and responses and between gender and responses at all frequencies. The study concludes that there is a correlation between mastoid pneumatization and extended high-frequency hearing.