Sartwell—Sheldon
- Sartwell, Henry Parker
- Satterlee, Richard Sherwood
- Saxe, Arthur Wellesley
- Say, Benjamin
- Sayre, Lewis Albert
- Schadle, Jacob E.
- Schäffer, Charles
- Schmidt, Henry D.
- Schroeder, Aimée J., see Raymond-Schroeder, Aimée J.
- Schultz, Sir John Christian
- Schuppert, Moritz
- Scott, Upton
- Scribner, Ernest Varian
- Scudder, John Milton
- Scudder, John, see Scudder, Nathaniel
- Scudder, John Anderson, see Scudder, Nathaniel
- Scudder, Henry Martyn, see Scudder, Nathaniel
- Scudder, Nathaniel
- Scudder, Silas Doremus, see Scudder, Nathaniel
- Seaman, Valentine
- Seely, William Wallace
- Seguin, Edward Constant
- Seguin, O. Edouard
- Seiler, Carl
- Selden, William
- Selden, William Boswell
- Semmes, Alexander Jenkins
- Semmes, Thomas
- Senkler, Albert Edward
- Senn, Nicholas
- Sergeant, Erastus
- Sewall, Lucy
- Sewall, Thomas
- Seybert, Adam
- Seymour, William Pierce
- Shakespeare, Edward Oram
- Shapleigh, Elisha Bacon
- Shattuck, Benjamin
- Shattuck, George Cheyne (1784–1854)
- Shattuck, George Cheyne (1813–1893)
- Shaw, Charles Stoner
- Shaw, John
- Shaw, John Cargyll
- Shecut, John Linnæus Edward Whitridge
- Sheldon, Alexander
Shepard—Smyth
- Shepard, Charles Upham
- Sherman, Benjamin Franklin
- Shew, Abram Marvin
- Shew, Joel
- Shipman, Azariah B.
- Shipman, George Elias
- Shippen, William (1712–1801)
- Shippen, William (1736–1808)
- Shoemaker, John Veitch
- Short, Charles Wilkins
- Shotwell, John T.
- Shrady, George Frederick
- Shumard, Benjamin Franklin
- Shurly, Ernest Lorenzo
- Shurtleff, Nathaniel Bradstreet
- Silliman, Benjamin (1779–1864)
- Silliman, Benjamin (1816–1885)
- Simons, Benjamin Bonneau
- Simpson, William Kelly
- Sims, James Marion
- Skene, Alexander Johnson Chalmers
- Skillman, Henry Martyn
- Slack, Elijah
- Slade, Daniel Denison
- Slayter, William B.
- Small, Horatio Nelson
- Small, William Bryant
- Smallwood, Charles
- Smart, Charles
- Smith, Alan Penniman, see Smith, Nathan Ryno
- Smith, Albert
- Smith, Albert Holmes
- Smith, Andrew Heermance
- Smith, Andrew Murray
- Smith, Ashbel
- Smith, David Paige
- Smith, Elihu Hubbard
- Smith, Francis Gurney
- Smith, George
- Smith, Gouverneur Mather, see Smith, Joseph Mather
- Smith, Henry Hollingsworth
- Smith, James
- Smith, James Morven, see Smith, Nathan and Smith, David Paige
- Smith, Jerome Van Crowningshield
- Smith, Job Lewis
- Smith, John Derby, see Smith, Nathan
- Smith, John Lawrence
- Smith, Joseph Mather
- Smith, Nathan
- Smith, Nathan Ryno
- Smith, Peter
- Smith, Samuel Mitchell
- Smith, Solon, see Smith, Nathan
- Smith, Thomas Croggon
- Smyth, Andrew Woods
Snow—Stillé
- Snow, Albion Parris
- Snow, Edward Sparrow
- Solly, Samuel Edwin
- Somers, John
- Somervail, Alexander
- Spalding, Lyman
- Spalding, Matthias, see McKeen, James
- Spence, John
- Spencer, Pitman Clemens
- Spencer, Thomas
- Spitzka, Edward Charles
- Spofford, Jeremiah
- Squire, Truman Hoffman
- Stabb, Henry Hunt
- Stamm, Martin
- Staples, Franklin
- Staughton, Janies Martin
- Stearns, Henry Putnam
- Stearns, John
- Stebbins, Nehemiah Delavan
- Stedman, Charles H., see Walker, Clement Adams
- Steeves, James Thomas
- Stein, Alexander W.
- Steiner, Lewis Henry
- Stephen, Adam
- Stephenson, Benjamin Franklin
- Stephenson, John
- Stern, Heinrich
- Sternberg, George Miller
- Steuart, Richard Sprigg
- Stevens, Alexander Hodgdon
- Stevens, Edward Bruce
- Stevens, Thaddeus Morrell
- Stevenson, Henry
- Stevenson, Sarah Hackett
- Stewart, David
- Stewart, David Denison
- Stewart, Ferdinand Campbell
- Stewart, Jacob Henry
- Stewart, James (1799–1864)
- Stewart, James (1846–1906)
- Stewart, Morse
- Stiles, Henry Reed
- Stiles, Richard Cresson
- Stillé, Alfred
- Stillé, Moreton
Stimson—Tewskbury
- Stimson, Lewis Atterbury
- Stockwell, Cyrus M.
- Stone, Alexander Johnson
- Stone, Richard French
- Stone, Robert King
- Stone, Warren (1808–1872)
- Stone, Warren (1843–1883)
- Storer, David Humphreys
- Stoy, Henry William
- Stribling, Francis Taliaferro
- Stringham, James S.
- Strong, Nathaniel
- Strudwick, Edmund Charles Fox
- Suckley, George
- Sutherland, Charles
- Sutton, George
- Sweat, Moses
- Sweetnam, Lesslie Matthew
- Sweetser, William
- Swett, John Appleton
- Swett, John Barnard
- Swift, Joseph Kinnersley
- Swinburne, John
- Tackett, John
- Taliaferro, Valentine Ham
- Taliaferro, William T.
- Tate, John Humphreys
- Taylor, Charles Fayette
- Taylor, George Herbert
- Taylor, Henry
- Taylor, Isaac Ebenezer
- Taylor, John Winthrop
- Taylor, Robert William
- Taylor, Thomas
- Taylor, William Henry
- Tebault, Alfred George
- Temple, John Taylor
- Tennent, Gilbert (1742–1770), see Tennent, John Van Brugh
- Tennent, Gilbert (1800–1855), see Tennent, John Van Brugh
- Tennent, John
- Tennent, John (1732?–?), see Tennent, John
- Tennent, John Van Brugh
- Tenney, Samuel
- Tewksbury, Jacob, see Tewksbury, Samuel Henry
- Tewksbury, Samuel Henry