Joseph O'Shaughnessey (died 1783) was an Irish Chief of the Name.
Joseph was the eldest son of the previous chief, Roebuck, and had siblings William, Mary, Catherine, Ellice, Elleanor, all alive in 1784.
The occasion caused much jubilation, with the church bells of Athenry and Galway ringing in support.
Joseph died in 1783 without issue, though his brother and sisters were apparently still alive.
The succession of the senior line becomes unclear after this point.