Adamstown Church, Seventh-day Adventist church in Adamstown, Pitcairn Islands, United Kingdom.

Adamstown Church is a Seventh-day Adventist building located at the heart of the island settlement with a distinctive double-tiered roof structure. The structure includes a separate entry vestibule that opens into the main worship space positioned along The Square.

Seventh-day Adventism reached Pitcairn in 1890, and the church was built soon after news of the islanders' receptiveness reached California, as the fruit of an American Adventist mission that converted nearly the whole population from the Church of England. In 2001, with attendance falling, the Adventist executive committee in New Zealand downgraded it from an officially recognised church to a company, while letting adherents affiliate to other Adventist churches.

The church is the only one on Pitcairn, the archipelago's sole inhabited island, and the product of an American Seventh-day Adventist mission that converted nearly all inhabitants from the Church of England. Services are held on Saturdays, the Adventist Sabbath, as is customary for the denomination.

The church stands on The Square, Adamstown's main street, and holds services on Saturdays, the Adventist Sabbath. Visitors should arrange access in advance, since Pitcairn has no airport and is reached by ship from New Zealand. The bell in front of the building marks the spot where a lookout once called "sail ho!"

This is the only Seventh-day Adventist place of worship across the entire Pitcairn Islands archipelago, serving one of the world's smallest and most isolated communities. Its presence reflects a faith tradition passed down through generations on this remote settlement.