O'Neill (disambiguation)

The O'Neill dynasty is a lineage of Irish Gaelic origin.

O'Neill, Ó Néill, O'Neil, O'Neal, or Uí Néill may also refer to:

People

Uí Néill, for information on the Ui Neill dynasty
O'Neill (surname), including surname origins and information
- List of people with the surname O'Neill, including O'Neal, O'Neil, and other variations
The O'Neill Brothers, an American instrumental duo

Baron O'Neill, a title in the Peerage of the United Kingdom
O'Neill baronets, two in the Baronetage of Ireland, and one in the Baronetage of the United Kingdom
Viscount O'Neill, a title in the Peerage of Ireland

O'Neill (brand), a surfwear and equipment brand that was started in San Francisco, California
O'Neill Sea Odyssey, a non-profit organization in Santa Cruz, California
O'Neills, an Irish sportswear company
Sandler O'Neill and Partners, a New York City-based investment banking firm
O'Neal Steel, Inc., an American metal company

Dennis O'Neill case, a Welsh child abuse and manslaughter case
O'Neill v Phillips, a UK company law case on an action for unfair prejudice
Sheff v. O'Neill, a Connecticut Supreme Court case regarding civil rights and the right to education

Eugene O'Neill Award, a Swedish award for stage actors
O'Neill World Cup of Surfing, an annual event at Sunset Beach in Hawaii
O'Neill Sebastian Inlet Pro, a surfing event in Florida
Tip O'Neill Award, an award given out by the Canadian Baseball Hall of Fame
O'Neill ministry, in the Parliament of Northern Ireland 1963–1969
O'Neill cylinder, a proposed style of space habitat
USS O'Neill (DE-188), a Cannon-class destroyer escort in the United States Navy