The 2019–20 coronavirus (COVID-19) pandemic was affirmed to have spread to Bangladesh on March 2020. The initial three known cases were accounted for by the nation’s Institute of Epidemiology, Disease Control and Research (IEDCR) on 7 March 2020 [1]. As of 9th April 2020, the Government of Bangladesh has reported that there is a total of 330 confirmed cases, 33 recoveries, and 21 deaths in the whole country [2]. In this research, I try to forecast the COVID-19 outbreak in Bangladesh by using a well-known epidemiological model, Susceptible-Infectious-Recovered (SIR) model.