Xinye (Chinese: 新野; pinyin: Xīnyě; Wade–Giles: Hsin-yeh) is one of the counties of Nanyang that lies in the southwest of Henan province, China. To the south lies the prefecture-level city of Xiangyang in Hubei province, to the east is Tanghe County and to the west is the county-level city of Dengzhou. According to the 2020 Chinese Census, the population of Xinye county is 602,827. Its total area is 1,062 km² (410 sq mi).

The G55 Erenhot–Guangzhou Expressway runs through Waizi town, which is the northmost town of Xinye. Both Nanyang Jiangying Airport and Xiangyang Liuji Airport are about 60 km (37 mi) away from Xinye.

Near the end of the Han Dynasty, the warlord Liu Bei used Xinye as a base, as a vassal under Liu Biao. Liu Biao himself had been residing in Xiangyang (today's Xiangfan). Liu Bei lost Xinye to Cao Cao in 208 and retreated to the southeast in prelude to the battle of the Red Cliffs.

As of 2012, this county is divided to 2 subdistricts, 8 towns and 5 townships.