Name
- Admiralty, Ireland1
- Allen, Patrick, surveyor1
- Andrews, John, Lieutenant1
- Annesley, Arthur, 1st Earl of Anglesey3
- Army of England2
- Arundell, John1
- Arwaker, Dorothy, pseud2
- Ashton, —1
- Aubrey, John, FRS, antiquary and naturalist1
- Aungier, Francis, 1st Earl of Longford2
- Barony of Dunkerron, Kerry1
- Barony of Glanerought, Kerry2
- Barony of Iveragh, Kerry1
- Barry, correspondent of Sir William Petty, fl 16751
- Bartholomew, of New England, fl 16751
- Bateman, -, agent of Sir William Petty, fl 16721
- Bedford, Thomas, Registrar of the Admiralty Court1
- Bedwell, Timothy, surveyor1
- Beecher, Thomas, of Cork3
- Bennet, Henry, 1st Earl of Arlington1