Siobhan Keegan

Dame Siobhan Roisin Keegan (born 6 June 1971) is a Northern Irish judge who has been Lady Chief Justice of Northern Ireland since 2021. She is the first woman to hold the senior judicial office in any part of the United Kingdom. She was formerly a judge of the High Court of Northern Ireland from October 2015 until her appointment as Lord Chief Justice, prior to which she practised as a barrister specialising in family law.

Early life Keegan was educated at St. Clare's Primary School and Sacred Heart Grammar School, Newry, County Down, Northern Ireland.

She studied law at Queen's University Belfast and graduated with a Bachelor of Laws (LLB) degree in July 1993. After further study, she was called to the Bar of Northern Ireland in September 1994.

For each of the financial years from 2013 to 2015, Keegan was the fourth-highest-earning barrister in Northern Ireland in terms of legal aid, having received £504,177 in 2012/2013, £513,405 in 2013/2014, and £427,632 in 2014/2015.

On 23 October 2015, Keegan was appointed a judge of the High Court of Justice in Northern Ireland. She was sworn into office by Sir Declan Morgan, the Lord Chief Justice of Northern Ireland, at the same time as Denise McBride. This made Keegan and McBride jointly the first female high court judges of Northern Ireland.

On 16 June 2021, Keegan was nominated to be Northern Ireland's first female Lord Chief Justice. Keegan chose to be styled Lady Chief Justice and was sworn-in on 2 September 2021. On 29 September, Keegan was appointed to the Privy Council. On 15 June 2022, Keegan LCJ delivered the lead judgment in the case of In the matter of H-W (Children) UKSC 17.Re H-W Children [2022 UKSC 17

She was elected an Honorary Fellow of the British Academy (Hon FBA) in 2026.