Mabini, officially the Municipality of Mabini (Cebuano: Lungsod sa Mabini; Tagalog: Bayan ng Mabini), is a 2nd class municipality in the province of Davao de Oro, Philippines. According to the 2020 census, it had a population of 43,552.  The municipality is the location of the Mabini Protected Landscape and Seascape. It was formerly known as Cuambog and Doña Alicia.