Calauan (), officially the Municipality of Calauan (), is a 2nd class municipality in the province of Laguna, Philippines. The municipality has a land area of 25.25 square miles which constitutes 3.41% of Laguna's total area. According to the 2020 census, it has a population of 87,693 people. Situated at southeast of Manila, via Calamba and Los Baños, and from Santa Cruz. 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 rusty 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 to 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 include the Field of Faith situated in Barangay Lamot 2 and the Isdaan Floating Restaurant located along the National Highway going to Victoria Laguna. History The fertile soil of Calauan attracted the oattention of Captain Juan de Salcedo, when he passed through Laguna and Tayabas (now Quezon) on his way to Bicol Region in 1570. Ten years later, Spanish authorities established a town government two kilometers from the site of the present Poblacion, in what is now Barrio Mabacan. They called the townsite “Calauan” (Tagalog word for rust). Following in epidemic in 1703, the town was moved to its present site at the fork of three roads---now to the south-west leading to San Pablo City, the other southeastward to Santa Cruz, the provincial capital, and the third going North to Manila. At the turn of the 18th century, when Bay was designated as the provincial capital of Laguna, Calauan became a sitio of Bay. Merchants going to Southern Luzon passed through Bay and Calauan. One of them, an opulent Spaniard by the name of Iñigo, bought large tracts of land in Calauan in 1812. The landholdings of Iñigo and, later, of his heirs were so vast that many portions were still unsettled. The property