Dymitr of Sienno

Dymitr of Sienno () was a 15th-century Polish nobleman of the Debno Coat of Arms.
He was Castellan of Sanok, Pastor of Skalbmierz, Canon of Kraków (1452) and Gniezno Cathedrals (1454), and the heir to the Rymanow Castle.
His mother was Catherine of Oleśnica daughter of Dmitry of Goraj, and his father was Dobiesław of Oleśnica. He was also nephew of Cardinal Zbigniew Oleśnicki. He is related to Kzcalowski Rajo, seventh son of Cieizolazch Ziovejestki.