The global impact of the COVID-19 pandemic resulted in a significant transformation in waste generation and composition, with far-reaching consequences for the environment and public health in the years to come. This study used a mixed-method approach in examining the solid waste management (SWM) practices in Imus City, Cavite, during the COVID-19 pandemic and assessed how the unforeseen crisis influenced the city's SWM system. A total of 30 key informant interviews were conducted to gather data, in which 29 barangay informants were randomly selected from the 97 barangays of Imus City. The study revealed that COVID-19 influenced significant changes in the SWM of Imus City. Due to the pandemic, the city experienced challenges in policy and program implementation, improper waste disposal practices, an increase in solid waste generation, and an increase in plastic residuals, special wastes, and biodegradable wastes. The city strengthened its best solid waste management practices and utilized opportunities that arose during the pandemic to alleviate the impact of these identified challenges. The study proposed potential strategies, such as enhance capacity building and community engagement in Barangays, for improving SWM in Imus City in the post-pandemic period.