Location of the seat in Henan
|Country||People's Republic of China|
|• Total||767 km2 (296 sq mi)|
|• Density||680/km2 (1,800/sq mi)|
|Time zone||UTC+8 (China Standard)|
Tongxu County (simplified Chinese: 通许县; traditional Chinese: 通許縣; pinyin: Tōngxǔ Xiàn) is a county in the east-central part of Henan province, China. It is under the administration of Kaifeng city.
As 2012, this county is divided to 6 towns and 6 townships.