The Agnew baronetcy of Lochnaw was created on 28 July 1629 for Patrick Agnew, Shire Commissioner for Wigtownshire from 1628.

Agnew baronets of Lochnaw, Wigtownshire (1629) Sir Patrick Agnew, 1st Baronet (c. 1578–1661) Sir Andrew Agnew, 2nd Baronet (died 1671) Sir Andrew Agnew, 3rd Baronet (died 1702) Sir James Agnew, 4th Baronet (c. 1660–1735) Sir Andrew Agnew, 5th Baronet (1687–1771) Sir Stair Agnew, 6th Baronet (1734–1809) Sir Andrew Agnew, 7th Baronet (1793–1849) Sir Andrew Agnew, 8th Baronet (1818–1892) Sir Andrew Noel Agnew, 9th Baronet (1850–1928) Sir Fulque Melville Gerald Noel Agnew, 10th Baronet (1900–1975) Sir Crispin Hamlyn Agnew, 11th Baronet (born 1944)

The heir apparent to the title is the present holder's son Mark Douglas Noel Agnew (born 1991).

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