Hugh O'Neill, 3rd Baron Rathcavan

The Lord Rathcavan
Member of the House of Lords
Lord Temporal
In office
30 December 1994 – 11 November 1999
as a hereditary peer
Preceded byThe 2nd Baron Rathcavan
Succeeded bySeat abolished  
Personal details
BornHugh Detmar Torrens O'Neill
(1939-06-14)14 June 1939
London, England
Died11 November 2025(2025-11-11) (aged 86)
OccupationBusinessman, peer, politician

Hugh Detmar Torrens O'Neill, 3rd Baron Rathcavan (14 June 1939 – 11 November 2025), was a British hereditary peer and businessman who sat as a crossbencher in the House of Lords from 1994 until 1999.