Archibald Primrose, Lord Dalmeny

Archibald Primrose, Lord Dalmeny (2 October 1809 – 23 January 1851) was a Scottish Liberal politician.

He was the eldest son and heir apparent of Archibald Primrose, 4th Earl of Rosebery (1783–1868), whom he predeceased, by his wife Harriett Bouverie.

Dalmeny was a supporter of the Reform Act 1832, and became a Member of Parliament for Stirling Burghs in the elections held that year after the passage of the bill. From 25 April 1835 until the fall of Melbourne's Second Government in 1841, Dalmeny was a Civil Lord of the Admiralty. In Parliament, he opposed both the secret ballot and the income tax. He did not contest the seat in 1847, and left Parliament.

On 20 September 1843 he married Lady Catherine Lucy Wilhelmina Stanhope (1819–1901), a historian, the daughter of Philip Stanhope, 4th Earl Stanhope, by whom he had three children:

After Lord Dalmeny's death, Lady Dalmeny married secondly Harry Powlett, 4th Duke of Cleveland (1803–1891) in 1854.

Dalmeny fell ill with pleurisy during the Christmas season of 1850, and while apparently recovering in January, died suddenly of heart failure.