Quezon, officially the Province of Quezon (Tagalog: Lalawigan ng Quezon) and historically known as Tayabas, is a province in the Philippines located in the Calabarzon region on Luzon. Lucena, a highly urbanized city governed separately from the province, serves as the provincial capital and its most populous city. The name of the province came from Manuel L. Quezon, the president of the Philippines from 1935 to 1944 and a native of Baler, which was formerly a part of the province. The province was known as Kalilayan upon its creation in 1591, renamed as Tayabas by the 18th century, before settling on its current name in 1946. To distinguish the province from Quezon City, it is also known as Quezon Province, a variation of the province's official name.
One of the largest provinces in the country, Quezon is situated on the southeastern portion of Luzon, with the majority of its territory lying on an isthmus that connects the Bicol Peninsula to the rest of Luzon. It also includes the Polillo Islands in the eastern part of the province. It is bordered by the provinces of Aurora and Bulacan to the north, Rizal, Laguna, and Batangas to the west, and Camarines Norte and Camarines Sur to the southeast. It also shares maritime borders with Marinduque and Masbate.