|Country||People's Republic of China|
|County seat||Laiyuan Town (涞源镇)|
|• Total||2,430 km2 (940 sq mi)|
|Elevation||859 m (2,818 ft)|
|• Density||110/km2 (290/sq mi)|
|Time zone||UTC+8 (China Standard)|
Laiyuan County (simplified Chinese: 涞源县; traditional Chinese: 淶源縣; pinyin: Láiyuán Xiàn) is a county in western Hebei province, China, bordering Shanxi province to the west. It is under the jurisdiction of the prefecture-level city of Baoding, and, as of 2006[update], it had a population of 270,000 residing in an area of 2,430 km2 (940 sq mi).
There are 7 towns and 10 townships under the county's administration.