Maria Callist Soosa Pakiam (born 11 March 1946) is the Archbishop Emeritus of the Latin Rite Archdiocese of Trivandrum.

Pope John Paul II named him coadjutor bishop of Thiruvananthapuram in December 1989.

Soosa Pakiam has headed the KCBC and Kerala region Latin catholic bishop council.

On 22 February 2021, Soosa Pakiam unofficially retired due to ailing health and Auxiliary Bishop Christudas Rajappan took over his duties.

[5] On 2 February 2022, Pope Francis officially accepted Soosa Pakiam's resignation and named Dr. Fr.