Castlemaine may mean:
*
Castlemaine, Victoria, a town in Victoria, Australia
**
Castlemaine Football Club, an Australian rules football club
**
Castlemaine railway station
Castlemaine railway station is located on the Deniliquin line in Victoria, Australia. It serves the town of Castlemaine, and it opened on 21 October 1862.
*
Castlemaine, County Kerry, a town in Ireland
*
Castlemaine Brewery, Western Australia - ceased trading in 1927
*
Castlemaine Perkins, a Queensland-based brewery, known for the ''XXXX'' range of beers
*
Baron Castlemaine, in the peerage of Ireland
*
Roger Palmer, 1st Earl of Castlemaine
Roger Palmer, 1st Earl of Castlemaine, PC (1634–1705) was an English courtier, diplomat, and briefly a member of parliament, sitting in the House of Commons of England for part of 1660. He was also a noted Roman Catholic writer. His wife Barb ...
*
Barbara Palmer, 1st Duchess of Cleveland
Barbara Palmer, 1st Duchess of Cleveland, Countess of Castlemaine (née Barbara Villiers, – 9 October 1709), was an English royal mistress of the Villiers family and perhaps the most notorious of the many mistresses of King Charles II of En ...
, wife of Roger Palmer
*
HMAS ''Castlemaine'', a ship in the Royal Australian Navy
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