Yiyang (simplified Chinese: 弋阳县; traditional Chinese: 弋陽縣; pinyin: Yìyáng Xiàn) is a county located in the center of the prefecture-level city of Shangrao, in the northeast of Jiangxi province, People's Republic of China.

In 1999 it had a population of 359,164 inhabitants.

[1] At present, Yiyang County has 1 subdistrict, 9 towns and 5 townships.

[2]