Mar Yohannan, also known (prior to episcopal consecration) as a monk Yoseph of Awgin, was Bishop of India (c. 1490–1503), a metropolitan province of the Church of the East.

In 1490, envoys of Saint Thomas Christians from the Malabar Coast in India traveled to Mesopotamia and arrived in Gazarta, bringing appeals to the hierarchy of the Church of the East, and asking for new bishops.

Activities of Mar Yohannan and other bishops reaffirmed traditional ties between Christians of India and the Church of the East.

By that time, local Christians of the Malabar Coast were also facing some additional challenges, caused by the establishment of Portuguese presence in India.

[1][2][3][4][5][6] In 1490, three delegates of Saint Thomas Christians from the Malabar Coast in India traveled to Mesopotamia to meet Patriarch Shemon IV of the Church of the East.