It is also referred to as "Amato," "Ama no iwaya," and "Ama no iwayato," and often written in kanji (Chinese characters) '石' (meaning stone), instead of '岩' (meaning rock).
天戸（あまと）、天岩屋（あまのいわや）、天岩屋戸（あまのいわやと）とも言い、「岩」は「石」と書く場合もある。