Sir Hercules Langford, 1st Baronet (1626 – 1683) was an Anglo-Irish baronet, merchant and landowner.
Langford was appointed High Sheriff of Antrim in 1661 and was High Sheriff of Meath in 1677. A devout Presbyterian, Langford was removed from the Commission of the Peace in Meath in the wake of Colonel Blood's plot to seize Dublin Castle. His estate was a centre of presbyterian worship, with a minister and a meeting-house supported by the family. On 19 August 1667 he was created a baronet, of Kilmackevett in the Baronetage of Ireland.
He married Mary Upton, a daughter of Henry Upton of Castle Upton, County Antrim.
Their sons were Arthur Langford and Henry Langford, both members of the Irish House of Commons,[1] and Theophilus Langford.
One of their daughters, Mary, married Sir John Rowley and their children included Hercules Rowley.