William Kenny PC (I), QC (14 January 1846 – 4 February 1921), was an Irish judge and Liberal Unionist politician.
He was mainly instrumental in establishing the Liberal Union of Ireland after the defeat of the Home Rule Bill of 1886, and in organising the visit of Lord Hartington and George Goschen to Dublin in 1887.
In 1898 Kenny was appointed a Judge of the High Court and resigned as Solicitor-General and from his seat in the House of Commons.
[2] Kenny remained on the bench until his death at his Dublin residence, Marlfield, Cabinteely, on 4 February 1921, aged 75.
Maurice Healy in his memoir The Old Munster Circuit described Kenny as stern and inflexible, somewhat lacking in empathy for those poorer than himself, but also a sound and learned lawyer with a strong sense of justice.