The Irish geographical name Ossory can refer to:

• Kingdom of Ossory or Osraige, an ancient kingdom of Ireland
• Earl of Ossory, a subsidiary title held by the Earl of Ormond
• Ossory (UK Parliament constituency), a UK Parliament constituency in Ireland from 1885 to 1918
• Diocese of Ossory, diocese associated with the ancient kingdom above, historical parent of the dioceses below
  • Roman Catholic Diocese of Ossory
    • Bishop of Ossory, bishop of the diocese above
  • Diocese of Ossory, Ferns and Leighlin, Church of Ireland, established 1835
    • Bishop of Ossory, Ferns and Leighlin, bishop of the diocese above
  • Diocese of Cashel and Ossory, Church of Ireland, established 1977
    • Bishop of Cashel and Ossory, bishop of the diocese above
• Ronald Ossory Dunlop (1894–1973), Irish author and painter
• HMS Ossory, three ships of the Royal Navy
• Ossory (horse), thoroughbred racehorse
• Ossory, a fictional prophet in the novel Small Gods