Queen Adelaide (Adelaide of Saxe-Meiningen, 1792–1849) was the consort of William IV.

Queen Adelaide may also refer to:

• Saint Adelaide of Italy, also called Adelaide of Burgundy (931/932–999), queen of Italy and Germany
• Adelaide of Paris (died 901), queen of the West Franks
• Adelaide of Aquitaine (died 1004), queen of the Franks
• Adelaide of Rheinfelden, queen of Hungary
• Adelaide del Vasto (c. 1075–1118), queen of Jerusalem
• Adelaide of Maurienne (1092–1154), queen of the Franks
• Adelaide of Vohburg (1125–1187), queen of Germany
• Adelaide of Champagne (1140–1206), queen of the Franks
• Adelaide of Meissen (1160–1211), queen of Bohemia
• Adelaide of Hesse (1323–1371), queen of Poland
• Adelaide of Austria (1822–1855), queen of Sardinia
• Adelaide of Löwenstein-Wertheim-Rosenberg (1831–1909), wife of Miguel I of Portugal after his deposition

• Queen Adelaide, Cambridgeshire, England
• Queen Adelaide Province, former name of British Kaffraria in South Africa

• The Queen Adelaide, a pub in Shepherd's Bush, London
• The Queen Adelaide (Bethnal Green), a pub in Bethnal Green, London

• Adelaide (disambiguation)