Lopburi Province จังหวัดลพบุรี is a province in the Central Region of Thailand. Also written Lop Buri, it covers 6,200 sq km (2,394 sq mi) and has a population of 756,000 people (2012 estimate), ranking it 37th in size and 30th in population among the 76 provinces of Thailand.
Lopburi Province is divided into 11 districts or amphoe. They comprises Muang Lop Buri (Lopburi Town), Phatthana Nikhom, Khok Samrong, Chai Badan, Tha Wung, Ban Mi, Tha Luang, Sa Bot, Khok Charoen, Lam Sonthi and Nong Muang.
Lopburi Province has been inhabited since prehistoric times, and was known for much of history as Lavo. During the Angkorian period, the ancient Khmer ruled over the area, building impressive temples that stand as ruins today. After the power of the Khmers waned, Lopburi came under the rule of the Kingdom of Sukhothai, and later the Kingdom of Ayutthaya. Lopburi remained largely insignificant until 1938, when it was chosen to be the site of the largest military base in Thailand.