The Mar Thoma Senior Fellowship is a dedicated ministry designed to foster the spiritual enrichment, fellowship, and active engagement of the church's elder members, typically those aged 60 and above. Recognizing the immense value, wisdom, and life experience of its senior congregants, the church established this fellowship to ensure they remain deeply integrated into the parish's life and mission. Often inspired by the biblical promise that the righteous will "still bear fruit in old age" (Psalm 92:14), the organization's central focus is to provide a supportive environment where elders can continue their spiritual growth, share their testimonies, and apply their lifelong skills to serve the broader church community.

In Canada, local branches like the Canadian Mar Thoma Church (CMTC) Senior Fellowship operate under the Diocese of North America and Europe to address the unique needs of elder members living in the diaspora. For many seniors—whether they immigrated decades ago or recently arrived to live with their adult children—the fellowship provides a vital antidote to the social isolation that can sometimes occur in a Western, fast-paced environment. By recreating the familiar cultural and spiritual warmth of their roots in Kerala, the Canadian chapters offer a comforting community where seniors can foster deep peer friendships, celebrate their Eastern Reformed heritage, and serve as a cultural and spiritual bridge for the younger generations raised in North America.

The Senior Fellowship serves as a steadfast foundation of wisdom and prayer within the local parish, maintaining an active and deeply meaningful calendar of events. Regular gatherings typically include daytime prayer meetings, detailed Bible studies, and focused intercessory prayer sessions for the church, the sick, and the world. Beyond these consistent meetings, members actively engage in pastoral care by visiting the homebound, the grieving, and those in hospitals or nursing homes. The fellowship also leads the parish in worship during the annual Senior Fellowship Day, passing down a powerful, living legacy of faith, resilience, and dedicated service to the rest of the congregation.