The Most Rev. Stephen Samuel Kaziimba Mugalu was elected 9th Archbishop of the Church of Uganda on August 28th, 2019 and enthroned on March 1st, 2020 in Kampala, Uganda.

Archbishop Kaziimba was consecrated a Bishop on October 26th, 2008 and served as the Bishop of Mityana, Uganda Diocese for eleven years. Archbishop Kaziimba received his Master's in Theology and Doctor of Ministry degrees from Western Theological Seminary in Holland, Michigan. At the time of his election, Archbishop Kaziimba had served as the Chairman of the Committee for HIV and Public Health for the Inter-religious Council of Uganda and Chairman of Words of Hope Uganda Radio Ministry.

Archbishop Kaziimba is a long-time supporter, partner and friend of the founders of Mercy Joy Ministries, William & Allyson Wiggins. They partnered together in 2012 to start a Child Education Sponsorship Program, Teacher's College, and School Building Repair Program in Mityana, Uganda. Mercy Joy's motto "Small Things For Big Impact" was Archbishop's advice to the Wiggins Family when they originally embarked on mission work in Uganda.

Archbishop Kaziimba is married to Margaret who is a strong Christian woman and Intercessor for many in Uganda. The Kaziimba's have four adult sons, three grandchildren, and have cared for and raised more than 20 other children.