- Lacy, Professor Frederick St. John
- Laidlaw, The Right Hon. Thomas Kennedy
- Laird, John
- Lakin, Capt. Michael Laurence
- Lambart, Hon. Lionel John Olive
- Lambart, Sir Gustavus Francis William
- Lambert, Richard Anderson
- Lanesborough, Earl of
- Langan, John Francis Hevey
- Langford, Baron
- Langham, Sir Herbert Charles Arthur
- Langrishe, Richard
- Langrishe, Sir Hercules Robert
- Langrishe, Henry Hoadly
- Lanigan-O'Keeffe, Captain Francis Stephen
- Lansdowne, Marquess of
- Lardner, James C. R.
- Larmor, Alexander
- Larmor, Sir Joseph
- La Touche, Robert Percy O'Connor
- Lavery, Sir John
- Lavery, Thomas Robert
- Lavin, Andrew
- Law, Hugh Alexander
- Law, S. Horace
- Lawless, Hon. Frederick
- Lawlor, Henry Cairnes
- Lawlor, Rev. Hugh Jackson
- Lawrence, William John
- Lawson, Lieut.-Gen. Sir Henry Merrick
- Layng, Arthur Edward
- Leader, William Nicholas
- Leahy, Major Thomas Joseph
- Leebody, Prof. John R.
- Leech, John
- Leeke, George
- Leeson-Marshall, Markham Richard
- Le Fanu, Thomas Philip
- Le Hunte, Sir George Ruthven
- Leinster, Duke of
- Leitch, Rev. Matthew
- Leitrim, Earl of
- Lemass, Peter Edmund
- Lemon, Lt.-Col. Frederick Joseph
- Lendrum, George Cosby
- Lennon, James
- Lenox-Conyngham, Lieut.-Col. William Arbuthnot
- Leonard, Patrick
- Leslie, Major Cecil Rowland
- Leslie, Edward Henry John
- Leslie, James Graham
- Leslie, Sir John
- Leslie, Shane Randolph
- Lewin, Col. Arthur Corrie
- Lewin, Thos. Frederic
- Lewis, Richard
- Lewis-Bridges, Brigadier-General George
- Liddell, Sir Robert Morris
- Liddy, John Joseph
- Lilly, Walter Elsworthy
- Limerick, Earl of
- Limerick, Ardfert, and Aghadoe, Bishop of
- Limerick, Bishop of
- Lindsay, David Moore/]]
- Lindsay, Lieut.-Col. Henry Edzell Morgan
- Lindsay, James Alexander
- Lindsay, Major Lionel Arthur
- Lindsay, Walter Charles
- Lindsay, William Arthur
- Lineman, His Honour Judge John
- Lineman, Thomas
- Lisle, Baron
- Listowel, Earl of
- Lloyd. Brig.-Gen. John Hardress
- Lloyd, John Merrick
- Lloyd, Richard Averell
- Lloyd, Col. Wilford Neville
- Lloyd, William
- Lloyd, William Harris
- Loftus, Major John Edward Blake
- Londonderry, Marquess of
- Long, Sir James
- Long, John Andrew
- Longfield, Mountifort
- Longfield, Col. Mountifort John Courtenay
- Longfield, Richard Edmund
- Longford, Earl of
- Lopdell, John
- Lougheed, Lieut.-Col. Samuel Foster
- Louth, Baron
- Low, Francis Simon
- Lowe, William Henry
- Lowry, Capt. Edward Leslie Barnwell
- Lowry, Lieut.-Col. Robert Thomas Graves
- Lowry-Corry, Hon. Cecil
- Lowry-Corry, Col. the Hon. Henry William
- Lowry-Corry, Lady Theresa
- Lucan, Earl of
- Lucas, The Hon. Sir Edward
- Lucas-Clements, Theophilus Edward
- Lumsden, Sir John
- Lundon, Thomas
- Lunham, Col. Sir Ainslie
- Lupton, Edmund
- Lyle, John Cromie
- Lyle, Robert Patton Ranken
- Lyle, Sir Thomas Ranken
- Lynch, Col. Charles Joseph
- Lynch, Finian
- Lynch, Col. Henry Blosse
- Lynch, Henry Charles
- Lynch, Jerome Morley
- Lynch, Joseph Christopher
- Lynch, Michael Palles
- Lynch, Patrick
- Lynch, Richard Charles
- Lynch, Thomas David Wilson
- Lynch-Staunton, Charles Rushworth
- Lynden-Bell, Major-General Sir Arthur Lyden
- Lynn, Robert John
- Lyons, Captain James Denis
- Lyons, John
- Lyons, William Henry Holmes
- Lyster, Thomas William
