| Jan Radziwiłł | |
| Birth Date: | 1492 |
| Birth Place: | Goniądz, Grand Duchy of Lithuania (now in Poland) |
| Death Date: | January 1542 |
| Death Place: | Chochło |
| Spouse: | Anna Kostevicz |
| Children: | with Anna Kostevicz: Anna Radziwiłł Petronele Radziwiłł Elzbieta Radziwiłł |
| Parents: | Mikolaj Radziwiłł Elźbieta Sakowicz |
Jan Radziwiłł (1492 most likely in Goniądz – January 1542 in Chochlo) was the Deputy Cup-Bearer of Lithuania and the Elder of Samogitia since 1535 until death. He was a grandson of Mikalojus Radvila the Old and the only son of Mikołaj II Radziwiłł. He had no male heirs therefore he was the last from the Goniądz- Radziwiłł family line.