José Gabriel Díaz Cueva (13 June 1925 – 26 January 2018) was a Roman Catholic bishop.
Diaz Cueva was ordained to the priesthood in 1950. He served as auxiliary bishop of the Roman Catholic Archdiocese of Guayaquil, Ecuador from 1964 to 1967 and from 1975 to 1999. He also served as auxiliary of the Roman Catholic Diocese of Cuenca from 1976 to 1968 and was bishop of the Roman Catholic Diocese of Azogues, Ecuador from 1968 to 1975.
He is also known as Jose Gabriel Diaz Cueva and José Gabriel Diaz Cueva.