Delfim is a Portuguese surname. Notable people with the surname include:
Antônio Delfim Netto (1928–2024), Brazilian economist, academic, and politician Francisco Delfim Dias Faria (1949–2004), Portuguese footballer Gabriel Delfim (born 2002), Brazilian footballer Horácio Delfim Dias de Faria (born 1947), Portuguese former footballer José Delfim (1907–?), Portuguese footballer Tiago Abiola Delfim Almeida Ilori (born 1993), Portuguese professional footballer