Christian missionaries played a very important role in the introduction and expansion of the printing press in colonial India. Their efforts influenced vernacular language development. The current paper focuses on the contribution made by the Church Missionary Society (CMS). This paper examines the distinctive and measurable contribution of the CMS to the print media ecology of South India. For example, the CMS established the CMS Press in Kottayam (Chacko, 2018). Apart from that, the CMS designed and produced indigenous vernacular typefaces. They published the region's first indigenous language journals. This research uses a Historical-Qualitative - Analysis to explore their contribution and the historical development of print media. Data are obtained from missionary records and academic histories. Results show that the CMS promoted the standardization of languages and literacy.