Famous Persons from Siennica, Masovian Voivodeship, Poland
- Halina Kiliś - Born on September 6, 1929 - Politician - Commander of the Order of Polonia Restituta | Knight of the Order of Polonia Restituta | Bronze Cross of Merit | Medal of the 30th Anniversary of People's Poland (died: July 21, 2022)
- Halina Zielińska - Born on July 15, 1928 - Farmer - Gold Cross of Merit | Knight of the Order of Polonia Restituta | Zasłużony Działacz Kultury (died: June 23, 2006)
- Eugeniusz Kamiński - Born on October 3, 1923 - Engineer (died: July 14, 1995)
- Józef Ciechan - Born on March 17, 1908 - Sculptor (died: April 25, 1989)