Angat, officially the Municipality of Angat, is a 1st class municipality in the province of Bulacan, Philippines. According to the 2020 census, it has a population of 65,617 people.

The Angat River is a river in the Philippines located in the province of Bulacan. It flows from the Sierra Madre mountain range to Manila Bay. Three dams are located along the river namely Angat, Ipo and Bustos. The catchment or basin area of the river is 1,085 square kilometres (419 sq mi) located in the Angat Watershed Forest Reserve. Angat River snakes through the municipalities of Doña Remedios Trinidad, Norzagaray, Angat, Bustos, San Rafael, Baliwag, Plaridel, Pulilan, Calumpit, Paombong, and Hagonoy. The river joins the Pampanga River at Calumpit via the Bagbag River.