There have been three Agnew baronetcies, one created in the Baronetage of Nova Scotia, and the others in the Baronetage of the United Kingdom. As of 2026} all three are extant.
- Agnew baronets of Lochnaw (1629)
- Agnew baronets of Great Stanhope Street (1895)
- Agnew, later Agnew-Somerville baronets, of Clendry (1957)