The Prince Adolphus, 1st Duke of Cambridge, KG, GCB, GCMG, GCH, PC (Adolphus Frederick; 24 February 1774 – 8 July 1850) was the 10th child and 7th son of George III and Queen Charlotte. He held the title of Duke of Cambridge from 1801 until his death. He also served as Viceroy of Hanover on behalf of his brothers George IV and William IV. He was the great-great-grandfather of the current monarch, Elizabeth II.

Prince Adolphus was born in February 1774 at Buckingham House, then known as the "Queen's House", in the City and Liberty of Westminster, now within Greater London. He was the youngest son of George and Charlotte to survive childhood.

On 24 March 1774, the young prince was christened in the Great Council Chamber at St James's Palace by Frederick Cornwallis, Archbishop of Canterbury. His godparents were Prince John Adolphus of Saxe-Gotha-Altenburg (his great-uncle, for whom the Earl of Hertford, Lord Chamberlain, stood proxy), Landgrave Charles of Hesse-Kassel (his first cousin once-removed, for whom the Earl of Jersey, Extra Lord of the Bedchamber, stood proxy) and Princess Wilhelmina of Orange (the wife of his first cousin once-removed, for whom Elizabeth Howard, Dowager Countess of Effingham, former Lady of the Bedchamber to Queen Charlotte, stood proxy).

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