Taijiang National Park (Chinese: 台江國家公園; pinyin: Táijiāng Guójiā Gōngyuán) is a national park in Tainan, Taiwan.

Taijiang National Park was established on October 15, 2009.

In total, the park's planned area stretches from the southern sea wall of Qingshan Fishing Harbor to the south bank of the Yanshui River and is mostly public coastal land.

The westernmost point on the island of Taiwan, Guosheng Port Lighthouse, is within the boundaries of the park which measures 20.7 km (12.9 mi) north to south and has an area of 393.1 km2 (151.8 sq mi), of which land accounts for 49.05 km2 (18.94 sq mi).

The marine area covers a band extending 20 metres (66 ft) from the shore and 54 km (34 mi) long from Yanshui River to Dongji Island, an area of 344.05 km2 (132.84 sq mi).