Dagny may refer to:Dagny (name), a female first name Dagny (film), a 1977 Norwegian-Polish film Dagny, Seine-et-Marne, a commune in France Dagny-Lambercy, a commune in Aisne, France SS Dagny, a ship name "Dagny" (song), a 1958 Owe Thörnqvist song Dagny (magazine), a Swedish women's magazine Dagny (singer), Norwegian pop singer