Name
- Stackelberg, Gustav Ernst, Count, Russian Ambassador at Naples1
- Stewart, Robert, Viscount Castlereagh, 2nd Marquess of Londonderry, 1769-18221
- Tervo, D., agent for Sir T Maitland1
- Testini, Giuseppe1
- Torrens, Henry, Major-General; KCB 18151
- Travers, Robert, Colonel; KCMG 1823, Major -General 18251
- Trench, Richard le Poer, 2nd Earl of Clancarty; 1st Viscount Clancarty 18231
- Troysi, Giacinto, Neapolitan Minister of Justice1
- Walker, Richard, Vice-Consul at Naples1