McMahon baronets of Ashley Manor (1817)

The McMahon baronetcy, of Ashley Manor, was created in the Baronetage of the United Kingdom on 7 August 1817 for John McMahon, Member of Parliament for Aldeburgh from 1802 to 1812 and Private Secretary to George IV from 1811 to 1817. He was the brother of William MacMahon, 1st Baronet of the 1815 creation.

McMahon was succeeded according to a special remainder by his second brother Thomas. The 2nd baronet was a general in the army and served as commander-in-chief of the forces at Bombay.