Simon James Power QSO (born 5 December 1969) is a former New Zealand politician. He was a member of the National Party and became Minister of Justice in the 2008-2011 National-led Government. He had previously served as the National Party's chief whip, and as its justice and corrections spokesman.
In the 1999 election, Power won Rangitikei. He defeated his opponent, the Labour Party's Craig Walsham, by slightly under three hundred votes. Once in parliament, Power became his party's spokesman on Labour, Industrial Relations, and Youth Affairs. After he retained his seat in the 2002 elections, these roles were swapped for Justice, Tertiary Education, and Workplace Skills.
In 2003, when Don Brash became leader of the National Party, Power's responsibilities were once again reshuffled, giving him the portfolios of Defence, Veterans' Affairs, and Youth Affairs.
Between 2005 and 2008, Power was Opposition Spokesperson on Law and Order and repeatedly called for an inquiry into the management of the Corrections Department. A few months before the election in 2008, Parliament’s Law & Order Select Committee agreed to hold a wide ranging inquiry. When National won the election in 2008, Power was appointed Minister of Justice and abandoned his plans for an inquiry.
On 2 March 2011 Mr Power announced he would step at the end of the term in late 2011. In April 2011, Power's ministerial portfolio for State-Owned Enterprises was transferred to Tony Ryall in preparation for Power's transition into business; he wanted to avoid potential conflicts of interest.
In December 2011 Power was granted the right to retain the title of The Honourable in recognition of his term as a Member of the Executive Council of New Zealand and became The Hon. Simon Power QSO. In January 2012 he became the head of Westpac Private Bank. In the 2012 Queen's Birthday Honours Power was appointed a Companion of the Queen's Service Order for services as a Member of Parliament.