Towzlu (Persian: توزلو, also Romanized as Towzlū, Toozloo, Tūzlū; also known as Tozlū) is a village in Bizineh Rud Rural District, Bizineh Rud District, Khodabandeh County, Zanjan Province, Iran. At the 2006 census, its population was 2,085, in 450 families.