Thaddaeus Dulny
- categoriae: vir , martyr
- diem natalis: 08.08.1914
- diem mortis: 07.08.1942
- beatificationis: 13.06.1999 (ceremonially)
- canonizationis: non-existence
- other Roman Martyrology days: 06.08.
- other memorial days: non-existence
- ordo: non-existence
- conditor ordo: non-existence
- nomina: Thaddaeus
- cognomina: Dulny
- epitheta: non-existence