Bank Street Unitarian Chapel is a Grade II* listed building on Bank Street in Bolton town centre, dating from 1696 with significant later alterations. The building is a rare surviving example of nonconformist architecture from the early eighteenth century — most such chapels of this period were demolished, rebuilt, or substantially altered beyond recognition. Bank Street retains much of its original character: a plain exterior of red brick, simple round-headed windows, and an interior with a galleried arrangement and box pews that reflects the Unitarian tradition's emphasis on austerity and the direct relationship between congregation and minister.
The chapel has an important place in Bolton's Dissenting tradition, which ran alongside and sometimes in opposition to the town's established Church and provided an alternative intellectual and social community for many of the mill owners, merchants, and professional families who shaped the town's development. Bolton had a particularly active nonconformist community in the eighteenth and nineteenth centuries, and Bank Street was one of the centres of that life. The chapel is still in use as a place of worship and is occasionally open for visits; the interior is the main draw for those interested in the history of English Protestant architecture.