- Sahay, Prateek1
- Salvati, James Robert1
- Saragas, Dimitris1
- Schramm, Christopher Edward1
- Schwartz, William Redmond1
- Shaw, Brian1
- Shi, Anna1
- Sirry, Abdelrahman Moustafa1
- Smith, Katherine M.1
- Spencer, Dale L.1
- St Germain, Brian Richard1
- Stack, Kyle Joseph1
- Starr, Robert M.1
- Stevens, Colin1
- Stilwell, Thomas1