O'Hanegan is a variant of the Irish surname O'Hannagain. The name originates from the Gaelic Ó hAnnagáin, meaning 'descendant of Annagán'. The personal name Annagán is a diminutive of Annadh, which translates to 'delay'.As an Anglicized form, O'Hanegan reflects the common transformation of Irish surnames through the addition of an 'H' after the prefix O' and variations in spelling. It belongs to a cluster of variants that include Hanegan, Hanigan, Hannigan, Hannigen, O'Hanigan, and the root form O'Hannagain.The surname is primarily found in Ireland, with records showing its presence in County Cork and surrounding areas. O'Hanegan and its variants are part of the broader set of Gaelic surnames that denote lineage, a key feature of Irish naming conventions.Meaning: Daughter of Annagán (diminutive of Annadh, 'delay')Type: SurnameOrigin: Irish (Gaelic)Usage Regions: Ireland (chiefly County Cork)