Janusz Aleksander Sanguszko was a magnate in the Polish–Lithuanian Commonwealth. He held the titles of miecznik and Court Marshal of Lithuania.
- Position held
- Court Marshal of the Grand Duchy of Lithuania, Polish elector, Q2586588, Q66190052
- Citizenship
- Polish–Lithuanian Commonwealth
- Born
- May 5, 1712
- Died
- September 14, 1775, September 13, 1775