Kansai Railway Company (It's pronounced in kanji characters as either Kansai Railway Company or Kansei Railway Company) is a railway industry that runs railroads across Central Japan Railway Company (JR Central) and West Japan Railway Company (JR West)'s current railroad, which existed during the Meiji period; it is the predecessor of the Kansai Main Line, Kusatsu Line, Katamachi Line, Kisei Main Line, Sakurai Line, Wakayama Line, Nara Line and Osaka Loop Line.
関西鉄道（關西鐵道。かんさいてつどう、かんせいてつどう）は、明治時代に存在した現在の東海旅客鉄道・西日本旅客鉄道の路線にまたがる鉄道事業者で、関西本線・草津線・片町線・紀勢本線・桜井線・和歌山線・奈良線・大阪環状線の前身である。