Adelaide of Brunswick-Grubenhagen

Adelaide of Brunswick-Grubenhagen (1285–18 August 1320) was the daughter of Duke Henry I of Brunswick-Grubenhagen and Agnes of Meissen. On 15 September 1315 she married at Innsbruck Henry of Carinthia, the deposed king of Bohemia, who sought an heir and stronger alliances.

She bore the empty title of queen of Bohemia but never visited the kingdom. Her daughter Margaret, born in Tyrol in 1318, became the future Countess of Tyrol. Adelaide died in 1320 without producing a male heir.