Reformed Dutch Church of Blawenburg, now known as Blawenburg Reformed Church, is a historic church at 424 County Route 518 in the Blawenburg section of Montgomery Township in Somerset County, New Jersey.

The Blawenburg Reformed Church Cemetery is located on County Route 601 near CR 518.

[3] The church was added to the National Register of Historic Places on July 22, 1985 for its significance in architecture and religion.

[4] It was added as a contributing property to the Blawenburg Historic District in 1990.

[4] The church is a two story white building, an example of late Georgian architecture.