Das Bistum Ogdensburg (lateinisch Dioecesis Ogdensburgensis, englisch Diocese of Ogdensburg) ist eine in New York in den Vereinigten Staaten gelegene römisch-katholische Diözese mit Sitz in Ogdensburg.
Papst Pius IX. gründete es am 15. Februar 1872 aus Gebietsabtretungen des Bistums Albany. Es wurde dem Erzbistum New York als Suffragandiözese unterstellt.
Das Bistum Ogdensburg umfasst die Countys Clinton, Essex, Franklin, Jefferson, Lewis und Saint Lawrence und Teile von Hamilton und Herkimer im Bundesstaat New York.
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