Ignacy Kluczewski (c. 1730 – before 1793) was a Polish Royal Secretary to the King Stanisław II August of Poland, Crown Army military official and diplomat who served as a Polish-Lithuanian Commonwealth chargé d'affaires to Russian Empire.

In 1768 he was incorporated to the Polish nobility by the Parliament of the Polish-Lithuanian Commonwealth and was granted Ozdoba coat of arms.

From January to February 1776 he was serving as a chief of a Polish diplomatic mission in the Russian Empire superseding Antoni Augustyn Deboli.

With time Kluczewski family built another manor house in the neighbouring Żebry villiage (Zhabry in today's Belarus).

Wielka Brzostowica parish together with the manor houses in Parchimowce and Żebry served as the family nest of the descendants of Ignacy Kluczewski until 1939 when World War II broke out and the lands were incorporated into the Soviet Union.