Saint Pierre, Abade de
Saint-Just, Louis
Saint-Simon, Conde de
Saint-Simon, Conde de
Salazar, António de Oliveira
Salgado, Plínio
Salisbúria, John Salisbury
Sanches, António Nunes Ribeiro
Sangnier, Marc
Santarém, 2º Visconde de
Santayana, Jorge
Santi Romano
Santos, António Ribeiro dos
Sanz del Rio, Julian
São Luís, Frei Francisco de
Saraiva, Alberto da Cunha Rocha
Saraiva, António José
Saraiva, António Ribeiro
Sardinha, António
Sartori, Giovanni
Sartre, Jean-Paul
Savigny, Friedrich Carl Von
Say, Jean-Baptiste
Schäffle, Albert
Scheler, Max
Schelling, Friedrich
Schelling, Friedrich
Schlegel, August-Wilhelm von
Schlözer, A. L. Von
Schlözer, C. Von
Schmitt, Carl
Schumacher Ernst F.
Schumpeter, Joseph Aloys
Schwartzenberg Roger-Gérard
Scotus John Duns
Scruton Roger
Seabra da Silva, José de
Seabra, António Luís de
Selden, John
Séneca
Senghor Léopold Sédar
Sérgio, António
Sidney, Algernon
Siegfried, André
Sieyes, Emmanuel Joseph, Abade de
Silva, George Agostinho da
Silva, Golbery do Couto e
Sismondi, Jean-Charles Léonard Sismonde
Smith, Adam
Sócrates
Sofistas
Soljenitsine, Alexandre
Sombart, Werner
Sorel, Georges
Sorokin, Pitirim A.
Soto, Domingo
Souza, José Pedro Galvão de
Spencer, Herbert
Spengler, Oswald
Spirito, Ugo
Spykman Nicholas J.
Staël-Holstein, Baronesa
Stahl, Friedrich Julius
Stein, Lorenz Von
Stirner, Max
Strange, Susan
Strauss, Leo
Stuart, Jaime
Sturzo, Luigi
Suarez, Francisco
Sully
Sumner, William Graham