Dalbergia tonkinensis (or sua) is a species of legume in the family Fabaceae.

It is a small tree, 5–13 metres (16–43 ft) tall, found in Hainan Island of China and Vietnam.

[2] It is threatened by habitat loss and overexploitation for timber.

[1] Furniture made from sua wood is particularly prized in China.

[3] Individual trees have sold for over a million US dollars.