- Sadlier, Thomas Ulick
- Sampson, Major Francis Cornelius
- Sampson, Col. George Ellis
- Samuels, The Right Hon. Arthur Warren
- Sanders, Robert Massy Dawson
- Sandford, Arthur Wellesley
- Saunders-Knox-Gore, Colonel William Arthur Gore
- Saunders-Knox-Gore, Lieut.-Col. William Arthur Cecil
- Saunderson, Edward Aremberg
- Saunderson, Major Somerset Francis
- Savage, Col. William Henry
- Savory, Professor Douglas Lloyd
- Scharff, Robert Francis
- Scott, Riqht Hon. Sir Charles Stewart
- Scott, Rev. George Digby
- Scott, Sir John Harley
- Scott, John Russell
- Scully, Darby
- Scully, His Honour Judge James Aloysius
- Scully, Vincent
- Sears, William
- Segrave, Charles William
- Segrave, Major O'Neal
- Seigne, John Thomas
- Semple, Lieut.-Col. Sir David
- Semple, Patrick
- Sexton, Thomas
- Seymour, Professor Henry J.
- Shaen Carter, Victor Arthur Tilson
- Shaftesbury, Earl of
- Shanahan, Philip
- Shandon, Baron
- Sharkey, Sir Seymour John
- Sharman-Crawford, Col. The Right Hon. Robert Gordon
- Shaw, Sir Alexander W.
- Shaw, Col. Sir Frederick William
- Shaw, George Bernard
- Shaw, Joseph
- Shaw, Kathleen Trousdell
- Sheedy, Morgan M.
- Sheehan, Daniel Desmond
- Sheehan, Rev. Canon Michael
- Sheehy, David
- Sheehy, Richard J.
- Sheehy-Skeffington, Mrs. Hanna
- Sheil, Mr. Justice John Devonshire
- Sheil, Richard Henry
- Sheppard, Major Henry Goddington
- Sheppard, Oliver
- Sheridan, A. Nicholas
- Shiel, Peter Burrowes
- Shields, Bernard Francis
- Shillington, Major David Graham
- Shillington, The Right Hon. Thomas
- Shine, Rev. John
- Shone, Lieut.-Gen. Sir William Terence
- Shortall, Sir Patrick
- Simms, Rt. Rev. John Morrow
- Simpson, Surgeon-Gen. Sir Benjamin
- Sinclair, Arthur
- Sinclair, Col. Thomas
- Sinclair, William Hugh Montgomery
- Sinton, Major John Alexander
- Skeffington Smyth, Lt.-Col. Geoffrey Henry Julian
- Skeffington-Smyth, Lt.-Col. Randal Charles Edward
- Slacke, Lady Frances Rose
- Slade, Lady Kathleen
- Slator, Henry Bevan Wilson-
- Sligo, Marquess of
- Sloan, Samuel
- Smiddy, Timothy A.
- Smiley, Sir John
- Smith, Alfred John
- Smith, Rev. Professor David
- Smith, George Hill
- Smith, Frederick Paul
- Smith, Louis Cornelius Patrick
- Smith, Walter George
- Smithwick, James Joseph
- Smyly, J. Gilbert
- Smyly, Sir Philip Crampton
- Smyly, Sir William Josiah
- Smyth, Austin Edward Arthur Watt
- Smyth, Lady Harriette Gertrude Isabella
- Smyth, James De Lacy
- Smyth, John Joseph
- Smyth, Thomas Francis
- Smyth, Captain Thomas Gibbons Hawkesworth
- Solly-Flood, Major-Gen. Arthur
- Solly-Flood, Brig.-Gen. Richard Elles
- Somerville, Major James Aubrey Henry Bellingham
- Somerville, Col. John Arthur Coghill
- Somerville, Rev. Canon Richard Neville
- Somerville, Colonel Thomas Cameron Fitzgerald
- Somerville, Lieut.-Col. William Arthur Tennison Bellingham
- Spaight, Col. William Fitzhenry
- Spraight, Major Thomas Henry Limerick
- Spring, Sir Francis Edward
- Spring-Rice, Hon. Francis
- Spring-Rice, Hon. Mary Ellen
- Spring-Rice, Hon. Thomas Aubrey
- Stack, Augustine
- Stacpoole, Richard John
- Stafford, The Right Hon. Sir Thomas
- Staines, Michael
- Stanford, Sir Charles Villiers
- Stanley, Sir John
- Staples, Robert Ponsonby
- Starkie, Robert Fitzwilliam
- Stevenson, Sir George Augustus
- Stewart, Col. Albert Fortescue
- Stewart, Alfred Walter
- Stewart, Capt. Charles Frederick
- Stewart, Sir Charles John
- Stewart, Brig.-Gen. Cosmo Gordon
- Stewart, The Right Hon. George Francis
- Stewart, Sir Harry Jocelyn Urquhart
- Stewart, Sir Hugh Houghton
- Stirling, Brig.-Gen. James Wilfred
- Stockley, Professor W. F. P.
- Stoker, Graves
- Stoker, Thomas
- Stokes, Lady Elizabeth
- Stokes, George Joseph
- Stokes, Sir Henry Edward
- Stoney, Lieut.-Col Francis Sadlier
- Stoney, Richard Atkinson
- Stopford, Capt. Hon. Arthur
- Stopford, Hon. Charles William
- Stopford, Lieut.-Gen. The Hon. Sir Frederick William
- Stopford, Hon. George Frederick William
- Stopford, Hon. Guy, Commander
- Stopford, Viscount
- Story, John Benjamin
- Story, Lieut.-Col. Robert
- Strahan, Rev. Professor James
- Strahan, James Andrew
- Strahan, Right Rev. William Gordon
- Stritch, John Russell
- Stronge, Sir Francis William
- Stronge, Sir James Henry
- Strickland, Walter G.
- Stuart, Viscount
- Stuart, Brig.-Gen. Burleigh Francis Brownlow
- Stuart, Hon. Charles Patrick
- Stuart, Major Godfrey Richard Conyngham
- Sudley, Viscount
- Sullivan, Alexander Martin
- Sullivan, Sir Edward
- Sullivan, Brig.-Gen. Edward Langford
- Sullivan, Joseph
- Sullivan, Patrick Donald
- Sullivan, Timothy
- Sutton, Rev. William
- Suirdale, Viscount
- Swain, Isaac
- Swan, Major-Gen. William Travers
- Swayne, Colonel Charles Henry
- Sweeney, Joseph
- Sweetman, John
- Sweetman, James Michael
- Sweetman, Lieut.-Col. Michael James
- Sweetman, Roger Mary
- Swifte, Sir Ernest Godwin
- Swifte, Godwin Sutler Meade
- Symington, Johnson
- Symmers, W. St. Clair
- Synge, Sir Francis Robert Millington
