Raja (Bengali: রাজা), (also known as The King of the Dark Chamber in English translation), is a play by Rabindranath Tagore written in 1910. This play is marked as a symbolic play as well as a ‘mystic play’. The story is loosely borrowed from the Buddhist story of King Kush from Mahāvastu. A short stage version of Raja was published under the title of Arupratan in 1920.
Sen described Raja as ‘the first really symbolic drama by Tagore.’ The theme of the play is ‘the secret dealing of God with the human heart.