João Dias may refer to:
Fajã de João Dias, permanent debris field on the island of São Jorge, Azores João Dias, Rio Grande do Norte, municipality in the state of Rio Grande do Norte in Brazil João Dias (CPTM), train station in São Paulo, Brazil João Dias (footballer) (born 1986), Portuguese footballer João Dias (politician) (born 1973), Portuguese politician João Scognamiglio Clá Dias (born 1939), Brazilian Roman Catholic priest