Tha Tan (Thai: ท่าตาล) is a sub-district (tambon) in the Bang Krathum District of Phitsanulok Province, Thailand.

Tha Tan is the northernmost sub-district in Bang Krathum, bordering Wang Nam Khu of Mueang Phitsanulok District to the north-west, Wang Thong District to the north-east, Nakhon Pa Mak to the south and Bang Krathum to the south-west.

Tha Tan lies in the Nan Basin, which is part of the Chao Phraya Watershed.

Originally named Bang Phi (บางผี), it was renamed Tha Tan in 1939.

Tha Tan is administered by a tambon administrative organization (TAO).