Appia Rare Earths & Uranium Corp. engages in the acquisition, exploration, and development of mineral properties in Canada and Brazil. It explores for rare earth elements, uranium, gallium, neodymium, praseodymium, dysprosium, terbium, phosphates, zinc, copper, molybdenum, and platinum group elements deposits. The company's flagship projects are the 100% owned Alces Lake property covering an area of 38,522.43 contiguous hectares located in Saskatchewan, Athabasca Basin Area; and the Elliot Lake property comprising 61 mining claims covering an area of approximately 14,484 hectares situated in northern Ontario. The company was formerly known as Appia Energy Corp. and changed its name to Appia Rare Earths & Uranium Corp. in October 2021. The company was incorporated in 2007 and is based in Toronto, Canada.