Stare Proboszczewice [ˈstarɛ prɔbɔʂt͡ʂɛˈvit͡sɛ] is a village in the administrative district of Gmina Stara Biała, within Płock County, Masovian Voivodeship, in east-central Poland.

It was situated on the bank of the River, surrounded by a moat it was 110 m by 130 m. From the 12th century when the town was owned by the provosts of the Plock Cathedral.

In 1375 Dobiesław Sówka, bishop of Plock, granted the village of "Petro servitori nostri" in three fields, settling after floret from the annual rent and 6 grain measures.

The village was owned by the Bishop of Plock, Piotr Dunin Wolski who was also Crown Deputy Chancellor.

In October 1939 the Nazi occupation transferred the village to be part of the Zichenau (region) of East Prussia.