- Peaslee, Amos J.1
- Petrov, Vladimir Mihailovich1
- Poliakov, Léon1
- Polish Unit of RFE/RL Research Institute; RFE/RL RI1
- Płażewski, Jerzy1
- Reitlinger, Gerald1
- Roberts, Henry L.1
- Romanian Unit1
- Salgado, Plinio1
- Samizdat Archives of Radio Free Europe1
- Schellenberg, Walter1
- Seton-Watson, Hugh1
- Shuster, George N.1
- Skórzewski, Edward1
- Snegirev, Vladimir Leontʹevich1
- Snell, John L.1
- Soiuzmultfilm1
- Stepun, Fedor1
- Stoessinger, John George1
- Stolica1