Calauan is a second class municipality in the province of Laguna, Philippines. According to the 2010 census, it has a population of 74,890 people. The town got its name from the term kalawang, which means rust. Folklore has it that the town got its name when the Spanish started construction of the Municipal Church and water seeped in from the holes dug into the ground for the Church’s foundation. The water was colored brown and rustic in character hence the name Calauan (Kalawang). Calauan is known for the Pineapple Festival, which is celebrated every 15 May.

The patron saint of Calauan is Isidore the Laborer, the patron of farmers, known in Spanish as San Isidro Labrador. Calauan’s population is expected rise as the town is being used as resettlement of informal settlers in Metro Manila through the Bayan ni Juan and the Kapit-Bisig para sa Ilog Pasig project of the ABS-CBN Foundation. Popular destinations in the area includes the Field of Faith situated in Brgy. Lamot 2 and the Isdaan Floating Restaurant located along the National Highway going to Victoria Laguna. Calauan is politically subdivided into 17 barangays: