Erra can refer to: Erra (god), a Babylonian god Erra, Estonia, a settlement in Sonda Parish, Ida-Viru County, Estonia Erra, the purported home planet of the pleiadean aliens described by ufologist Billy Meier Pizzo Erra, a mountain in Switzerland Giancarlo Erra, founder of the Italian rock band Nosound Erra-Pater, an astrologer Erra (band), an American metalcore band Erra (album), their fifth studio album Erra (Kakatiya dynasty), a 10th century Indian ruler ERRA may refer to: Enterprise and Regulatory Reform Act 2013 Energy Regulators Regional Association Earthquake Reconstruction and Rehabilitation Authority