Calauan is a 2nd class municipality in the province of Laguna, Philippines. According to the 2000 census, it has a population of 43,284 people in 8,818 households.

The town got its name from the term kalawang, which means rust. Calauan is known for the Pineapple Festival, which is celebrated every May. The Hidden Valley Springs, a popular hot spring resort, although its entrance is situated in the adjacent town of Alaminos, is actually within Calauan's boundaries.

Barangays

• Balayhangin
• Bangyas
• Dayap
• Hanggan
• Imok
• Lamot 1
• Lamot 2
• Limao
• Mabacan
• Masiit
• Paliparan
• Perez
• Kanluran (Pob.)
• Silangan (Pob.)
• Prinza
• San Isidro
• Santo Tomas