The Simeon baronetcy, of Grazeley in the County of Berkshire, was created in the Baronetage of the United Kingdom on 22 May 1815 for John Simeon, Member of Parliament for Reading and Senior Master of the Court of Chancery.

[3] The 2nd Baronet represented the Isle of Wight in the House of Commons.

The eighth Baronet was Professor of Political Science and Law at the University of Toronto.

[4] Charles Simeon, third son of the 1st Baronet, was a rear-admiral in the Royal Navy.

His great-grandson Sir Charles Edward Barrington Simeon (1889–1955) was a vice-admiral in the Royal Navy.