The Southwestern Philippine Union Conference (SwPUC) of the Seventh-day Adventist Church is responsible for overseeing the spreading of the gospel in the Mindanao islands, including Dinagat and Siargao to the northeast, and Basilan, Sulu, and Tawi-Tawi to the west.

SwPUC collaborates with five regional headquarters known as missions and conferences, covering the territories of Zamboanga Peninsula, Western Mindanao, North-central Mindanao, Northeastern Mindanao (Caraga), and Central Mindanao (Bukidnon). The SWPUC also supervises two higher education institutions - Mountain View College in Bukidnon and Adventist Medical Center College in Iligan City, as well as three medical institutions - Gingoog Sanitarium and Hospital, Adventist Medical Center-Valencia, and Adventist Medical Center-Iligan.

TERRITORIAL MAP

The SwPUC governs a vast area in Mindanao, consisting of eight provinces, nine cities, 170 municipalities, and 3,757 barangays. As of 2020, the population of this region is 4,543,650. The church's mission is carried out through various ministries, including 31,510 care groups (SPUC Q3 2023), 2,424 churches (SPUC Q3 2023), 311 districts with 358 pastors (SPUC Q3 2023), and 3,205 institutional workers (SPUC Q3 2023). The steady growth of Adventism in Mindanao is attributed to the collaborative work of pastors, workers, and members, as well as the influence of medical and educational institutions, and the widespread use of radio, TV, and social media.

Membership
As of Q3 2023, SPUC has officially divided into two Unions, namely the Southwestern Philippine Union Conference and the Southeastern Philippine Union Mission. In 105 years since Adventism began in Mindanao in 1918, the total membership of the two Unions is 695,763. Considering the total population of Mindanao, which is over 26 million, the ratio of baptized Adventist members to the population is estimated at 2 Adventists for every 37 people.