Count, later Prince, Alexander Otto Hugo Wladimir zu Münster (1 September 1858 – 12 October 1922) was a German aristocrat who was the owner of Maresfield Park estate, Maresfield, East Sussex.

Prince Alexander Münster was born in Derneburg, Kingdom of Hanover, on 1 September 1858,^[1] the son of Georg Herbert, Prince zu Münster (1820–1902), German ambassador in London 1873-1885 and subsequently Paris.^[2] His mother was his father's first wife, Princess Aleksandra Mikhailovna Golitsyna.

In 1890 he married Lady Muriel Hay (1863–1927), daughter of George Hay-Drummond, 12th Earl of Kinnoull, at St Andrews church in Wells Street, London, an event depicted on the front page of The Illustrated London News.^[3] The couple had sons Friedrich (1891-1942) and Paul (1898-1968).^[4]

Münster inherited Maresfield Park estate in 1899 from his friend Hervey Charles Pechell. Münster was living in Maresfield Park while Pechell and his wife, Blanche Henrietta Johnes Shelley, resided in Bellagio in Italy. He officiated at the planting of the oak on Maresfield Recreation Ground commemorating Queen Victoria's Jubilee in 1897 which was performed by her eldest daughter the German Empress, wife of the German Emperor Frederick III. The Pechells had donated the ground to the parish in 1897 but Münster legally transferred it in 1899. In 1915, during the First World War, it was seized from him by the British government under the Trading With the Enemy laws as he was a German citizen.^[1][5] Records relating to Maresfield Park are held by the East Sussex Record Office.^[6]

Münster died on 12 October 1922.^[1] Maresfield Park was sold in 1924^[5] to William Henry Abbey,^[7] a brewer , industrialist and landowner.