Edvard Armas Järnefelt (August 14, 1869 – June 23, 1958), was a Finnish composer and conductor.
Armas Järnefelt was born in Vyborg, in the Grand Duchy of Finland, the son of general August Aleksander Järnefelt and Elisabeth Järnefelt (née Clodt von Jürgensburg). His siblings were Kasper, Arvid, Erik, Ellida, Ellen, Aino, Hilja and Sigrid. Armas Järnefelt was the first Finnish composer to conduct Richard Wagner's operas in Finland. He achieved some minor success with his orchestral works Berceuse and Praeludium.
Järnefelt's music teacher in Helsinki was Ferruccio Busoni and in Paris, Jules Massenet. He enjoyed a close relationship with Jean Sibelius, who was married to Järnefelt's sister Aino. From 1905 Armas Järnefelt worked in Sweden. He became a Swedish citizen in 1909, and died in Stockholm.
| Preceded by Georg Schnéevoigt |
Principal Conductors, Helsinki Philharmonic Orchestra 1942–1943 |
Succeeded by Martti Similä |