Chronic otorrhoea is a disease of the ear that lasts for more than 6-12 weeks, through a perforated tympanic membrane. We sought to determine the cause of chronic suppurative otitis media (CSOM) at our institute. Methodology Ear swabs taken from enrolled patients (n=139) were sent for culture and sensitivity. Statistical analysis was done using Statistical Package for Social Sciences (SPSS), version 26 (IBM Corp., Armonk, NY) Results Common pathogenic bacteria in chronic otitis media observed were Pseudomonas aeruginosa 81 (58%) while Klebsiella pneumoniae was found in 58 (42%) of cases. Conclusion We concluded that Pseudomonas aeruginosa was the most common causative agent of CSOM at our institute.