Long County or Longxian (simplified Chinese: 陇县; traditional Chinese: 隴縣; pinyin: Lǒng Xiàn) is a county of Baoji, in the west of Shaanxi province, China, bordering Gansu province to the north and west.

Longxian was formerly known as Longzhou (陇州), and named for being east of Longshan, which is the southern part of the Liupan mountain range between Baoji and Guyuan, Ningxia.

It used to be the capital of King Zhuangxiang of Qin[1] The county is 60% covered by forests and considered an important water source for the region with 49 streams and rivers.

[1] Longxian is known for goat milk, walnuts, apples and honey.

Longxian administers 10 towns which include 104 incorporated villages.