Tuia is a surname. Notable people with the surname include:
Alessandro Tuia (born 1990), Italian footballer Pio Tuia (born 1943), Tokelauan politician Samuel Tuia (born 1986), French volleyball player Tuanaitau F. Tuia (c.1920 – 2010), American Samoan politician Valerie Saena Tuia, plant scientist from Samoa