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.

Laguna, officially the Province of Laguna, is a province in the Philippines located in the Calabarzon region in Luzon. Its capital is Santa Cruz while its largest city is the City of Calamba and the province is situated southeast of Metro Manila, south of the province of Rizal, west of Quezon, north of Batangas and east of Cavite. Laguna hugs the southern shores of Laguna de Bay, the largest lake in the country. As of the 2020 census, the province's total population is 3,382,193. It is the seventh richest province in the country in 2016.