Mikołaj Radziwiłł
Mikołaj Radziwiłł or Nicholas Radziwill may refer to:
- Mikalojus Radvila, Grand Chancellor of Lithuania
- Mikołaj II Radziwiłł, Grand Chancellor of Lithuania
- Mikołaj III Radziwiłł, Bishop of Samogitia
- Mikołaj "the Red" Radziwiłł, Voivode of Vilnius, Grand Chancellor and Grand Hetman of Lithuania
- Mikołaj "the Black" Radziwiłł, Voivode of Vilnius, Grand Chancellor and Grand Hetman of Lithuania
- Mikołaj VII Radziwiłł, Voivode of Navahrudak
- Mikołaj Krzysztof Radziwiłł the Orphan, Grand Marshal of Lithuania, voivode of Trakai and Vilnius
- Mikołaj Krzysztof Radziwiłł (1695–1715), Podstoli of Lithuania and starost of Człuchów