The Rt. Rev. Callist Rubaramira was born on 8th February 1950 in Rubira village, Rushoroza Parish. He was ordained a priest on Pentecost Sunday 18th May 1975 at Rushoroza Parish. He was appointed Bishop of Kabale Diocese by Pope John Paul II on March 18, 2003 and ordained and installed as Bishop of Kabale Diocese on Pentecost Sunday 8th June, 2003 at Rushoroza. He is the fourth appointed Shepherd after Bishops Gervasius Nkalanga (R.I.P), Barnabas Halem’Imana (R.I.P) and Robert Mary Gay (R.I.P) of the Missionaries of Africa.

On May 18, 2025, Rt. Rev. Callist Rubaramira will celebrate 50 years in priesthood (priestly Golden Jubilee) at Our Lady of Good Shepherd Rushoroza Cathedral.