Kaiyang County (simplified Chinese: 开阳县; traditional Chinese: 開陽縣; pinyin: Kāiyáng Xiàn) is a county of central Guizhou province, China.

Kaiyang County comprises 3 subdistricts, 7 towns, 5 townships and 3 ethnic townships:[1] Kaiyang railway station is the terminus of the Guiyang–Kaiyang intercity railway, opened in 2015.

The Kaiyang County Public Security Bureau(Chinese: 开阳县公安局) is the primary law enforcement agency of Kaiyang county.

[2] It is a child agency of the Guiyang Municipal Public Security Bureau.

This Guizhou location article is a stub.