Joseph Adeyemo Adeogun was a pastor, evangelist, teacher, and church administrator from Nigeria.
Josiah Makinde Akinbo Adeoye was a pastor, evangelist, T.V. and radio host, and church administrator in Nigeria.
Jimmy Jiamah Hadji Adil, Sr. was a missionary to the Muslim populations in the Philippines. He was the first Maguindanaon convert to Adventism and the first Filipino Muslim to be ordained to the Adventist ministry and become mission president.
Herbert William Adrian served as secretary and treasurer for the Tasmanian Conference and the Fiji Mission.
Alfredo Aeschlimann, pastor, administrator, educator, served in the Austral Union Conference, Antillean Union, Mexico Union and Inter-American Division.
Eugene Theodore Agard was a physicist and Seventh-day Adventist exemplar for creationism.
Agbedigue Kodjo Raphael, the first Togolese pioneer and Adventist evangelist, was born in 1942 in the village of Kolo-Mésiwobe (south of Togo).
David Narter Agboka was among the first native Ghanain ministers and evangelists in Ghana.
David Toyebi Agboola was a pastor, administrator, and published author from Nigeria.
Isidro Aguilar y Domingo was a colporteur, pastor, professor, founder of the first College of Adventist Theology in Spain, and president of the Spanish Adventist Mission.
Daniel Atsiyamashi Agyo was an evangelist, pastor, and a church administrator in Nigeria for the North-East Nigeria Conference for nearly 33 years.
Emil J. Åhrén was a preacher, editor, and author from Sweden.
Wilfred Jonathan Airey was a renowned Adventist educator and an active participant in public institutions for higher education.
John Aitken was the manager of the Avondale Press for thirteen years between 1909 and 1922. He trained many to operate a press and they in turn operated presses throughout the countries of the Australasian Union Conference.
George Hillry Akers was a lifelong educator and administrator for the Seventh-day Adventist educational system.
Reuben Agboola Akintunde was a pastor, administrator, and evangelist from Nigeria.
Edwin was a professor at Washington Missionary College (1915-1920). Later he became a prominent lawyer and law professor, serving for most of his career at Northwestern University. Barbara was a musician and professor of harmony and music history.
Ingrid Jenny Elisabeth Albiner was a Seventh-day Adventist teacher, evangelist, chaplain, writer, and author from Sweden.
Keith Densel Albury was a pastor and church administrator from Habbour Island, better known as “Briland,” in the Commonwealth of the Bahamas.
Anatoly Aleksandrovich Alekseev was an Adventist lay member who accomplished many things for the Adventist church in Russia, including the visual materials for preaching the Gospel such as paintings, postcards, books, and film strips.