Anna Milton is a fictional character portrayed by actress Julie McNiven on The CW Television Network's drama and horror television series Supernatural. First appearing in the fourth season, Anna is a fallen angel who champions humanity over her own kind; because she is fallen, she is a hunted fugitive of Heaven with a death sentence on her head. She is initially an ally to series protagonists Sam and Dean Winchester as well as to Castiel, but becomes an antagonist in her final episode when her method for averting the Apocalypse in the fifth season pits her against them.

Julie McNiven is an American actress and singer. McNiven was born in Amherst, Massachusetts, and got her start in local community theatre productions. She is best known for her recurring roles in Mad Men (2007–2009) and Supernatural (2008–2010). McNiven also had a recurring role in the second season of Stargate: Universe (2010–2011).