Antoni Barnaba Jabłonowski (1732–1799) was a Polish noble (szlachcic) and political activist.

Antoni became voivode of Poznań Voivodship in 1760, castellan of Kraków since 1782, starost of Międzyrzecz, Busko-Zdrój, Świecie and Czehryń.

He participated in the Great Sejm in 1788–1792 and was member of the Patriotic Party.

Knight of the Order of the White Eagle, awarded on 3 August 1761, in Warsaw.

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