Dysart or Dysert () may refer to:

Places Australia Dysart, Queensland, a town and locality in the Isaac Region Dysart, Tasmania

Canada The United Townships of Dysart, Dudley, Harcourt, Guilford, Harburn, Bruton, Havelock, Eyre and Clyde, known for short as Dysart et al, Ontario Dysart, Saskatchewan

Ireland Dysart and Ruan, a Catholic parish in County Clare Dysart (civil parish), a civil parish in County Westmeath Dysart, County Westmeath, a village in County Westmeath Dysert, County Clare, a civil parish in County Clare Dysart, County Roscommon, a village in County Roscommon Diseart Diarmad, (English:Castledermot), a village in County Kildare

Scotland Dysart, Fife Dysart (Parliament of Scotland constituency), a pre-1707 constituency

United States Dysart, Iowa Dysart, Pennsylvania

People Earl of Dysart, a Scottish peer Elbert Dysart Botts (1893–1962), American highway engineer ("Botts' dots") Michael Dysart (1934–2026), Australian architect Richard Dysart (1929–2015), American actor Tommy Dysart (1935–2022), Scots-born Australian actor William Dysart (1929–2002), Scottish actor Fiction Martin Dysart, a character in Equus

Other Dysart Arms, a former public house in SW London Dysart Buildings, Nantwich, an 18th-century terrace in Nantwich, England Dysart Unified School District, a school district in NW Metropolitan Phoenix