Gongyi (Chinese: 巩义市; pinyin: Gǒngyì Shì), formerly Gong County (Chinese: 巩县; pinyin: Gǒngxiàn), is a county-level city belonging to the city of Zhengzhou in Henan province, China. It has a population of 790,000 people and an area of 1,041 square kilometres.