Tuwai is a surname. Notable people with the surname include:

Adi Tuwai (born 1998), Fijian footballer Isoa Tuwai (born 2002), Fijian rugby union player Jerry Tuwai (born 1989), Fijian rugby union player Pio Tuwai (born 1983), Fijian rugby union player

See also Ṭuwais (632–711), an Arab singer and teacher Tuwai (hapū), Māori iwi of northern Hawke's Bay