Ban Na (Thai: บ้านนา, pronounced [bâːn nāː]) is a district (amphoe) in the western part of Nakhon Nayok province, central Thailand.

[2] Neighboring districts are (from the east clockwise) Mueang Nakhon Nayok and Ongkharak of Nakhon Nayok Province; Nong Suea of Pathum Thani province; and Wihan Daeng and Kaeng Khoi of Saraburi province.

The important water resource is Khlong Ban Na.

The district is divided into 10 subdistricts (tambons), which are further subdivided into 116 villages (mubans).

There are nine subdistrict administrative organizations - SAO (ongkan borihan suan tambon - o bo toh).