Józef Eustachy Szembek (born 1697) was a Polish nobleman who was Bishop of Płock from 1753.

According to Antoni Julian Nowowiejski, Szembek was made Bishop of Płock by King August III in 1752.

[2] As bishop, Szembek republished Pope Benedict XIV's 1751 encyclical, A quo primum.

Historians Ludwik Finkel and Antoni Julian Nowowiejski mention 1758.

This article about a Polish Catholic bishop or archbishop is a stub.