Ratna Manikya I (d. c.1487), also known as Ratna Fa, was the Maharaja of Tripura from 1462 to the late 1480s. Though he had gained the throne by overthrowing his predecessor, Ratna's reign was notable for the peace and prosperity it had entailed in the region. He extensively reformed and modernised the government and closely allied it with neighbouring Bengal, resulting in a lasting cultural influence in Tripura.