West Indonesia Union Mission
Sub Entities
Current Yearbook
Contained:
Organizational Units (4)
Administrated:
Education (12)
Medical (5)
Non-Yearbook (AdventistDirectory.org)
Contained:
Congregations (533)
Administrated:
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Entered: 1/6/2026
Last Updated: 1/7/2026

WEST INDONESIA UNION MISSION

(Formerly part of the new Central Indonesia Union Mission)

Organized 2026

Territory: Sumatra and the western tip of Java; comprising the Jakarta-Banten Conference; Central Sumatra, North Sumatra, and South Sumatra Missions.

Statistics (June 30, 2025): Churches, 475; membership, 37,824; population, 67,276,759 (online statistics).

Address: Pekanbaru, Central Sumatra; Indonesia.

Administration:

President, Binsar Sagala.

Secretary, Ronny Wenas.

Treasurer, Ronny Manurung.

Departments:

Adventist Chaplaincy Ministries, ___.

Children's Ministries, Marliana Tambunan.

Communication, Sonny Situmorang.

Education, Parulian Sihotang.

Family Ministries, Health Ministries, and Women's Ministries, Gina Manawan.

Ministerial Association (and Evangelism), Desmond Silitonga; Ministerial Spouses Association, Marliana Tambunan

Planned Giving and Trust Services, and Stewardship Ministries, Romawasi Sihotang.

Public Affairs and Religious Liberty, Sonny Situmorang.

Publishing Ministries, Saiman Saragih.

Sabbath School and Personal Ministries, Freddy Manurung.

Youth Ministries, Nikodemus Ginting.

Other Ministries and Services:

Adventist Mission, Freddy Manurung.

ASI, Romawasi Sihotang.

Ellen G White Research Center, and Spirit of Prophecy, Saiman Saragih.

Nurture, Discipleship, and Reclamation/Integrated Evangelism Lifestyle, Desmond Silitonga.

Public Campus Ministries, Nikodemus Ginting.

System Codes: EntityID: 1012194; OrgMastID: ATZ111; AdmFieldID: WEIN.