The Moon, later Graham-Moon baronetcy, of Portman Square in the County of Middlesex, was created in the Baronetage of the United Kingdom on 4 May 1855 for the art publisher Francis Moon. He was Lord Mayor of London for 1854/5.
The Official Roll marks the title as "vacant".
Moon, later Graham-Moon baronets, of Portman Square (1855) Sir Francis Graham Moon, 1st Baronet (1796–1871) Sir Edward Graham Moon, 2nd Baronet (1825–1904) Sir Francis Sidney Graham-Moon, 3rd Baronet (1855–1911) Sir (Arthur) Wilfred Graham-Moon, 4th Baronet (1905–1954) Sir Peter Wilfred Giles Graham-Moon, 5th Baronet (1942–2023) Sir Rupert Francis Wilfred Graham-Moon, presumed 6th Baronet (born 1968), son of the 5th Baronet
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