Loaiza is a surname. Notable people with the surname include:
Armando Loaiza (1943-2016), Bolivian politician Carlos Silva Loaiza (1919–2009), Colombian footballer Elizabeth Loaiza Junca (born 1989), Colombian model Esteban Loaiza (born 1971), Mexican baseball pitcher Henry Loaiza-Ceballos, Colombian drug dealer Herman Loaiza (born 1956), Colombian racing cyclist Juan Carlos Loaiza, Chilean rodeo horse rider Karly Loaiza (born 1994) American singer and songwriter Miguel Loaiza (born 1983), Bolivian footballer