St Bartholomew's Church, Sealand, is in Sealand, Flintshire, Wales and in the diocese of St Asaph[1][2] The church is designated as a Grade II listed building.

[3] The church was built between 1865 and 1867 to a design by the Chester architect John Douglas.

[4] It was one of Douglas's earliest churches and is in the High Victorian style of Gothic Revival architecture.

The site for the church was given by the River Dee Company who also partly paid for it.

The stained glass in the east window of 1867 is by Hardman & Co. and was donated by Douglas.