Ban Rai (Thai: บ้านไร่) is a subdistrict (tambon) in the Bang Krathum District of Phitsanulok Province, Thailand.

Ban Rai borders Bang Rakam District and Wang Nam Khu of Mueang Phitsanulok District to the north, Bang Krathum to the east, Khok Salut to the south and Phichit Province to the west.

The Nan River flows through Ban Rai at Ban Khok Salut, and the Yom River forms part of the subdistrict's border with Phichit.

The subdistrict is divided into 10 smaller divisions called (muban) (villages).

Ban Rai is administered by a Tambon administrative organization (TAO).