Koo Li-hsiung, also known by his English name Wellington Koo, is a Taiwanese lawyer and politician. During his legal career, Koo represented several politicians. His own political career began with a term on the National Assembly, followed by an unsuccessful campaign for the Taipei mayoralty in 2013. In 2016, he was elected a legislator at large representing the Democratic Progressive Party. Koo left the Legislative Yuan to lead the Ill-gotten Party Assets Settlement Committee. In 2017, he became chairman of the Financial Supervisory Commission. Koo was appointed secretary-general of the National Security Council in 2020. Koo served in the role until 2024, when he was appointed minister of National Defense.