Ban Rai (Thai: บ้านไร่, pronounced [bâːn râj]) is a district (amphoe) in Uthai Thani province in western Thailand.

The district is divided into 13 sub-districts (tambons), which are further subdivided into 134 villages (mubans).

Silkworm farmers have created a collective to produce the fibre using clean technologies such as all-natural dyes.

The moths that produce the cocoons are not harmed in the process, leading some to call it "peace silk".

[1] This Uthai Thani Province location article is a stub.