The Marquess of Donegall is a title in the peerage of the United Kingdom, associated with the Donegall family in Northern Ireland. The title was created in 1791 for Henry Vane-Tempest, who was also the 1st Earl of Donegall. The family has a long history in the region, with roots tracing back to the 17th century. The Marquessate is part of the Peerage of Ireland and has been held by various members of the Vane-Tempest family. The current holder, as of 2023, is Richard Vane-Tempest, the 9th Marquess, who is involved in various charitable and community activities in Belfast and beyond.