Major General Sir Charles Rosenthal KCB, CMG, DSO, VD (12 February 1875 – 11 May 1954) was an Australian architect, soldier, musician and politician.

He commanded units of infantry in the Australian Imperial Force during the First World War, and in the 1920s was elected as a member of the New South Wales Legislative Assembly.

[1][3] In 1892 Rosenthal joined the Geelong Battery of the Victorian Militia Garrison Artillery as a gunner, but left the service three years later on moving to Melbourne.

He returned to Egypt when the (AIF) was expanding and given command of the artillery of the new 4th Division and was promoted brigadier general in February 1916.

[1][3] After the war Rosenthal contemplated not returning to the profession of architecture but did so while leading an active public life.

[1] Rosenthal had been founding secretary in 1921 and later president of The King and Empire Alliance, with which Robert Darroch asserts D.H. Lawrence had been in contact, probably through W. J. R. Scott.

It has also been alleged that Rosenthal was involved with the Old Guard, a secret anti-communist militia, set up by the Bruce government.