Lao Khwan (Thai: เลาขวัญ, pronounced [lāw kʰwǎn]) is a district (amphoe) in the northeastern part of Kanchanaburi province, central Thailand.

When the government established a new town, they named it Ban Lao Khwan.

The minor district (king amphoe) Lao Khwan was created on 1 October 1971, when the three tambons Lao Khwan, Nong Sano, and Nong Pradu were split off from Phanom Thuan district.

[3] Neighboring districts are (from the south clockwise) Huai Krachao, Bo Phloi, Nong Prue of Kanchanaburi Province, Dan Chang, Nong Ya Sai, Don Chedi and U Thong of Suphanburi province.

It is known as the home village of the main character in the popular Thai martial arts film Ong-Bak played by Tony Jaa.