For the Vietnamese fermented soybean paste, see Tương.

Hát tuồng (also called hát bội, or simply tuồng) is a form of Vietnamese theatre. Hát tuồng is often referred to as classical "Vietnamese opera" influenced by Chinese opera. In Southern dialect this is equivalent with hát bội.

Tuồng is distinct from the older hát chèo genre of Vietnamese theatre which combines dance, song and poetry, and the more modern cải lương folk musical.