- Media and Opinion Research Department1
- Meter, Barbara2
- Mieroszewski, Juliusz1
- Miklós Hollós1
- Morgenthau, Hans J.1
- N/A1
- Nee, Watchman1
- Nicolaescu, Sergiu1
- Nóvé, Béla9
- Open Media Research Institute2
- Open Society Archives at Central European University2
- Orthodox Church in America1
- Osborn, Robert J.1
- Pallai, Péter4
- Panfilov, Gleb1
- Parrish, Michael1
- Pasternak, Boris Leonidovich1
- Pateman, Carole1
- Pelikán, Jiři1
- Philipp, Tibor2