The Markazi Masjid (“Central Mosque”), also known as the Dewsbury Markaz or Dar ul Ulum (“House of Knowledge”), is a mosque in the Savile Town area of Dewsbury, West Yorkshire.

With a maximum capacity of 4,000, it is one of the largest mosques in Europe. It is the European headquarters of the Tablighi Jamaat movement, and also houses the Institute of Islamic Education, an independent day and boarding faith school for boys aged 13–19 and one of the two main Islamic seminaries in the UK. The mosque serves as a centre for Tablighi Jamaat’s missionary activity throughout Europe.

Construction of the mosque commenced in 1978 and was completed in 1982; the seminary was founded in 1980. The founder of Dewsbury Markaz was Hafiz Patel, who remained its leading figurehead until his death in 2016.

The Dewsbury Markaz is aligned with the Tablighi Jamaat movement and bases its services around its six principles. Daily services consist of prayers, talks and public lectures, and the organisation of ten person groups (jamaats) who undertake proselytising trips. As the headquarters of Tablighi Jamaat in Europe, it has frequently been the location of its annual regional gathering (ijtema). The Markaz co-ordinates activities of the Tablighi Jama’at across the UK through liaison with five regional centres in Blackburn, Birmingham, Glasgow, Leicester and London and hundreds of UK mosques.