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Judge of the Supreme Court of Kenya
Justice Isaac Kipkurui Lenaola (born 21 December 1967 in Samburu County) is a Kenyan jurist serving as a Judge of the Supreme Court of Kenya, appointed in October 2016 after a competitive Judicial Service Commission (JSC) recruitment process. He is widely regarded as one of the country’s most experienced and internationally exposed judges, with a judicial career spanning more than two decades across Kenya’s superior courts and multiple international tribunals. Before joining the Supreme Court, he served as a High Court Judge, a Judge of the Court of Appeal (on secondment), and the Presiding Judge of the East African Court of Justice (EACJ), demonstrating a rare breadth of regional and continental judicial experience.
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Justice Isaac Kipkurui Lenaola (born 21 December 1967 in Samburu County) is a Kenyan jurist serving as a Judge of the Supreme Court of Kenya, appointed in October 2016 after a competitive Judicial Service Commission (JSC) recruitment process. He is widely regarded as one of the country’s most experienced and internationally exposed judges, with a judicial career spanning more than two decades across Kenya’s superior courts and multiple international tribunals. Before joining the Supreme Court, he served as a High Court Judge, a Judge of the Court of Appeal (on secondment), and the Presiding Judge of the East African Court of Justice (EACJ), demonstrating a rare breadth of regional and continental judicial experience. Beyond his Kenyan judicial duties, Justice Lenaola has held significant international posts: he served as a Judge of the Residual Special Court for Sierra Leone (RSCSL), where he handled complex post-conflict, international-criminal-law and transitional-justice matters. He has also been a Member of the African Union/United Nations hybrid mechanisms in East Africa. Known for his calm, measured judicial temperament, he has contributed to major constitutional, human-rights, electoral-justice and devolution jurisprudence in Kenya since joining the Supreme Court, and he is regularly cited in scholarly and judicial forums for his work on comparative constitutionalism and judicial ethics.
Highlights that showcase impact and influence.
Supreme Court of Kenya Justice (2016–present): Appointed to Kenya’s apex court, where he has contributed to landmark presidential-election decisions, constitutional-interpretation rulings and devolution jurisprudence.
Presiding Judge, East African Court of Justice: Led the First Instance Division of the EACJ, overseeing disputes involving the EAC Treaty and deepening regional integration through jurisprudence.
Judge, Residual Special Court for Sierra Leone: Served on the UN-backed tribunal responsible for legacy cases from the Sierra Leone conflict, handling high-stakes decisions in international criminal law and post-war accountability.
Long-serving Kenyan judicial leader: Served in nearly all High Court stations, including Machakos, Meru, Kakamega, and the Constitutional and Human Rights Division in Nairobi, and held leadership roles such as Principal Judge of the High Court’s Constitutional Division.
A timeline of pivotal roles and responsibilities.
High Court Judge (2003–2016): Appointed in 2003; served in multiple divisions and stations and became one of the most experienced constitutional-law judges prior to elevation.
Court of Appeal Judge (on secondment): Served as a Judge of the Court of Appeal before his Supreme Court appointment, contributing to appellate jurisprudence.
East African Court of Justice (EACJ): Served as Judge and later Presiding Judge of the First Instance Division, shaping regional legal harmonisation and cross-border judicial cooperation.
UN/International Judicial Service: Appointed Judge of the Residual Special Court for Sierra Leone (RSCSL), dealing with international criminal and post-conflict law, while simultaneously serving in Kenya’s Supreme Court.
Key events that have shaped public perception.
2012 Vetting Board review: Like many High Court judges, he appeared before the Judges and Magistrates Vetting Board; he was cleared with no adverse findings, reinforcing his reputation for integrity and competence.
Election-petition backlash (2017 & 2022): Faced political criticism—alongside the entire Supreme Court bench—during presidential-election petitions; however, no personal misconduct has ever been established.
International-jurisdiction debates: His dual service at the RSCSL occasionally sparked public debate about judges holding international appointments concurrently with domestic roles, though all were formally sanctioned and legal.
Perceived judicial activism: Some political actors have labelled certain Supreme Court rulings he participated in as “activist,” but these are partisan criticisms with no formal disciplinary or ethical implications.
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Fast answers for readers and reporters.
Justice Isaac Kipkurui Lenaola (born 21 December 1967 in Samburu County) is a Kenyan jurist serving as a Judge of the Supreme Court of Kenya, appointed in October 2016 after a competitive Judicial Service Commission (JSC) recruitment process. He is widely regarded as one of the country’s most experienced and internationally exposed judges, with a judicial career spanning more than two decades across Kenya’s superior courts and multiple international tribunals. Before joining the Supreme Court, he served as a High Court Judge, a Judge of the Court of Appeal (on secondment), and the Presiding Judge of the East African Court of Justice (EACJ), demonstrating a rare breadth of regional and continental judicial experience.
Isaac Lenaola is affiliated with Non-partisan.
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