| Tadeusz Mikołaj Thullie | |
| Birth Date: | 6 December 1741 |
| Death Date: | 14 April 1843 |
| Occupation: | Royal secretary |
Tadeusz Mikołaj Thullie (born 6 December 1741 in Warsaw, died 14 April 1843 in Lwów)[1] was the last Royal Secretary of King Stanisław August Poniatowski.[2] He was ennobled in 1767, receiving the Prawdzic coat of arms.[3] He was the son of Adam Thullie, lieutenant general of the Polish army, and Katarzyna née Fontana, a sister of royal architect Jakub Fontana.[4]
Tadeusz's grandfather, Jan Thullie, had been brought to Poland from France by hetman Adam Mikołaj Sieniawski.[5] He was a doctor in the army and the French navy. After arriving in Poland, he became chief medical officer of the Polish army and a lay judge in Lwów.[6]
From his first marriage with Joanna Głębocka, Tadeusz Thullie had two sons and two daughters. From his second marriage with Rozalia Franchi, he had three daughters and five sons.[7] His son Wincenty Thullie (1789–1868) was a playwright.[8]
Tadeusz Thullie was the great-grandfather of Maksymilian Thullie[9] and the great-great-grandfather of general Jan Thullie.[10]