Ubaldi is a surname. Notable people with the name include:
Benedetto Ubaldi (1588–1644), Italian Roman Catholic cardinal Giacomo "Jack" Ubaldi (1910–2001), Italian-American butcher and chef Martín Félix Ubaldi (born 1969), Argentine former football striker Marzia Ubaldi (1938–2023), Italian actress and voice actress Pietro Ubaldi (1886–1972), Italian author, teacher and philosopher
See also Baldo degli Ubaldi, is a station on Line A of the Rome Metro Baldus de Ubaldis (1327–1400), Italian jurist