Yichuan County () is a county in northern Shaanxi Province, China, bordering Shanxi province to the east across the Yellow River. It is under the administration of the prefecture-level city of Yan'an. The county spans an area of , and has a population of 117,900 as of 2012.
Yichuan County is divided into one subdistrict, four towns, and two townships. The county's sole subdistrict, , is the site of the county government. The county's four towns are , , , and . The county has two townships: and .
The county is located in northern Shaanxi, southeast of Yan'an's urban core. Yichuan County is part of the larger Loess Plateau. The Hukou Waterfall is located on the eastern border of the county.
The county has an average annual precipitation of , and an average annual temperature of .
In 1948, Peng Dehuai lead Communist Party forces to battle against the Kuomintang in the , which took place in present-day Yingwang Township.
The county has been recognized by the Chinese Ministry of Agriculture as being a significant site for Zanthoxylum.
The county has been recognized by the Chinese Ministry of Culture for its unique chest-drums.
Key highways which pass through the county include the G22 Qingdao-Lanzhou Expressway, China National Highway 309, Shaanxi Provincial Road 201, Shaanxi Provincial Road 204, and Shaanxi Provincial Road 303. The total length of highways in the county totals 1,557.5 kilometers. The Haoji Railway also passes through Yichuan County.