Of Greek origin.
From the Greek name «Αγνή» (Hagne).
Derives from the Greek word «αγνός» (hagnós), meaning “chaste”, “intact”, “pure”.
It was the name of Saint Agnes of Rome. She was a popular Christian martyr and thus the name was very popular in the English speaking world, mostly during the Middle Ages.
Other forms of the name are Αγνή, Agnès, Agnese, Agneta, Agnis, Ines, Ynes, Inez, Aggie, Nancy, Agnella, Nessa, Anezka, etc.
Agnes is ranked #12 in Sweden and #17 in Denmark.
Famous bearers are Agnès Varda, Agnes Obel, Agnes Martin, Agnes Bruckner.