Malayil Sabu Koshy Cherian (born 26 August 1961) is the 13th Bishop of the Madhya Kerala Diocese of the Church of South India.

[1] Sabu Koshy Cherian was born into the Saint Thomas Anglican family of Malayil, in Punnackadu, Kozhencherry.

[2] His father M. K. Cherian was a retired teacher from CMS High School, Kuzhikkala, and mother Aleyamma Cherian was also a retired teacher from Government High School, Kozhencherry.

Later he received his Bachelor of Divinity (BD) from UBS, Pune and Doctor of Ministry from New York Theological Seminary.

Being the Treasurer, he introduced centralized salary system for all clergy and evangelists, took special care to protect and safeguard the Diocesan property, successfully managed diocesan Bi-centenary celebrations and 35th session of CSI Synod meeting during the demonetization period, renewed rental agreements of the shopping complex tenants, which was pending for decades, in line with the current market rates.