Peter Thomas Kelly (born 17 June 1950) is an Irish lawyer who held various judicial roles between 1996 and 2020. He began his career working in the civil service, before becoming a successful barrister. He was first appointed a Judge of the High Court in 1996, having an instrumental role in the establishment of the Commercial Court division of the court in 2004. He was one of the first judges appointed to a new Court of Appeal when it was established in 2014. He returned to the High Court in 2015 on becoming the President of the High Court, a role which he held until retiring in 2020. He was an ex officio member of the Supreme Court of Ireland while President of the High Court.