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Julián Ocampo, regarded as the first Adventist pastor in Chile, was previously a tinsmith of Methodist confession who accepted Adventism in the north of the country.
Daudi Inda Ogillo was a Tanzanian teacher, pastor, and pioneer missionary to Sudan.
East-Central Africa Division Biography Educators Groundbreakers Missionaries
Lui Oli was a pioneering Papuan pastor and leader. He was the first Papuan to be the president of the Central Papuan Mission and the first of his countrymen to be a member of the Australasian Division executive committee.
Oscar Olsen (or Olson) served as a missionary, first in Sweden as a publishing director and later in Persia as an education, publishing, and youth director.
Middle East and North Africa Union Mission Biography Groundbreakers Missionaries
The Norwegian Olaf Johan Olsen, also known as Iceland-Olsen and the Apostle to Iceland, had a remarkable mission career in the Seventh-day Adventist Church as a missionary pastor, leader, and administrator. In Iceland, over a period of 33 years, he raised up the local church from almost nothing to eight congregations, second only to the Lutheran State Church.
Trans-European Division Biography Groundbreakers Missionaries
George Onosolase Omijeh, popularly known as Pa Omijeh, was a pastor, an evangelist, and an administrator who served the Seventh-day Adventist Church in Nigeria.
Ole Oppegard, a pioneer from Norway, served in Argentina as a literature evangelist and as the first Adventist missionary in South America dedicated to medical missionary efforts.
South American Division Biography Groundbreakers Missionaries
William Adolphus Osborne was a leading pioneering Caribbean Adventist educator and administrator who worked and inspired Adventist youth for more than 40 years between 1930 and 1975.
Nahashon Nyasimi Osebe was the first Adventist lay evangelist to work among the Kipsigis.
John Oss (史約翰; Pinyin Shǐ Yuēhàn) was an Adventist colporteur, minister, administrator, and missionary to China. He was the official pioneer missionary to open the first wave of the denomination’s work in Mongolia. He witnessed wars in China and was a prisoner of war.
Chinese Union Mission China Biography Groundbreakers Missionaries Died/Imprisoned for Faith
Melvin and Mae Oss were missionaries to India. Melvin was the founder of Camp MiVoden and co-founder of Upper Columbia Academy.
Trans-European Division Biography Groundbreakers Missionaries
Frank Frederick Oster was a pioneer missionary to the Middle East. He served for thirty-five years, and his wife, Florence, for thirty-one. Much of their time was difficult and dangerous, but but they stayed the course and laid the foundations of the Adventist mission work in the Middle East.
North American Division Biography Groundbreakers Missionaries
Simeon Dea Otieno, a native of Utegi, Tarime, Mara Region, Tanzania, was an Adventist pastor, teacher, and evangelist, and the first African pastor to hold the position of executive secretary of the Tanzania Union Mission.
Rose Otis was the first director of the General Conference’s Department of Women’s Ministries. She was also the first woman to be elected a vice president of the North American Division and later, vice president of the Texas Conference.
General Conference Biography Groundbreakers Missionaries Women
Dr. Carl Ottosen was a founder, promoter, and leader of the Seventh-day Adventist health work in Scandinavia. Together with his wife, Johanne Pauline, he founded Frydenstrand Sanatorium and Skodsborg Sanatorium in Denmark, following Dr. John Harvey Kellogg’s model from Battle Creek in America. His influence and groundbreaking work set a new trend for preventive and curative health work in Denmark and earned him the respect of his colleagues and the order of Knight of Dannebrog from the Danish king.2 He was a strong supporter and participant of the Adventist church work in his home country, Denmark.
Trans-European Division Biography Groundbreakers Medical Workers
Charles and Mary Paap together spent 27 years planting Seventh-day Adventist (SDA) churches in more Australasian communities than any other minister of their generation.
South Pacific Division Biography Groundbreakers Missionaries Couples
Walter Page was a longtime Union College professor,.
Will Otis Palmer, a leader in the publishing field and a pioneer mission worker to the African American population in the southern United States, was born in Michigan in September 1865 to Charles C. and Cornelia A. (Sexton) Palmer.
Barnabas Pana was one of the first ordained Solomon Islanders, and he worked over 40 years as a missionary among his people and was integral to the translation of the Marovo Bible.
South Pacific Division Biography Groundbreakers Missionaries
Georges Comlavi Paraïso was the founding elder of the second Seventh-day Adventist Church in Lomé, Togo. A great singer, he founded the first Adventist quartet in Togo and played a pioneering role in Adventist music in Togo.