Sir William Moore Johnson, 1st Baronet, KC, PC (1828 – 9 December 1918)[1] was an Irish politician, barrister and judge.

William Johnson, chancellor of the Diocese of Cloyne, and his wife Elizabeth Hamilton, daughter of the Rev.

He was educated at Trinity College Dublin, entered Lincoln's Inn in 1849, and was called to the Irish Bar four years later.

However, as Attorney General, he caused a furore when, on arriving in Court to prosecute Maurice's uncle Timothy Michael Healy, he publicly shook his hand, and the Crown felt that it would be better if he ceased to be a Law Officer.

[6] At the Wexford assize in 1897, he expressed his horror at the brutal murder of James Kelly, a prosperous farmer from Kilcavan, the previous month.