Southeast University (simplified Chinese: 东南大学; traditional Chinese: 東南大學; pinyin: Dōngnán Dàxué, SEU), colloquially Dongda (Chinese: 东大; pinyin: Dōngdà) is a public research university located in Nanjing, Jiangsu Province, China. It is one of the oldest universities and the first coeducational university in China.