Acute Invasive Fungal Rhinosinusitis (AIFR) is a serious condition with aggressive course and high mortality rates. There is an upsurge in the incidence of invasive fungal rhinosinusitis in post COVID-19 patients. We have come across 20 AIFR cases in post COVID-19 patients. On retrospective exploration of the patient’s records, we found that 30% patients had received steroids and 90% had diabetes. All the patients were managed by administration of IV amphotericin B and local debridement of infected tissues. The mortality rate was as low as 15 %. We conclude that combined approach of Antifungal therapy with debridement of infected tissues improves the prognosis and survival of AIFR patients.