Yan Yao (Thai: ย่านยาว, pronounced [jâːn āːw]) is a tambon (subdistrct) of Mueang Phichit district, Phichit province, central Thailand.

In the past, Yan Yao was believed to be the location of a crocodile attack that devoured people living along the Nan river, which is the origin of a well-known Phichit folklore, Krai Thong.

[1] Yan Yao is located in the north and covers an area of approximately 46.695 km2.

Adjoining subdistricts, from north and moving clockwise, are Sanam Khli in Bang Krathum district of Phitsanulok province; Phai Khwang and Khlong Khachen in its district; and Sam Ngam in Sam Ngam district, respectively.

It is also divided into 10 administrative mubans (villages) as follows:[2]