John Blake Powell, PC (Ire), KC (1870 – 13 September 1923) was an Irish solicitor, barrister and judge.
He was the eldest son of John Powell of Ballytivan House, Sligo.
Originally qualifying as a solicitor, he was called to the Bar in 1894.
In 1918 he was appointed a judge of the Chancery Division of the High Court of Justice in Ireland, remaining in this post in the High Court of the Irish Free State until his death.
This Irish law-related biographical article is a stub.