Luke Ronchi (/?r??ki/ RONG-ki; born 23 April 1981) is a former New Zealand international cricketer, having earlier also represented Australia. Luke Ronchi is the first player to represent two ICC Member Nations, since Kepler Wessels. Ronchi is the only player to have played for both Australia and New Zealand in cricketing history. Ronchi was part of the New Zealand World Cup side that finished runners-up in the 2015 Cricket World Cup, after their defeat in the final to Australia; Ronchi's former country. He plays for Wellington in New Zealand domestic matches and has played Twenty20 matches for the Islamabad United, Mumbai Indians, Perth Scorchers, Somerset, Birmingham Bears, Leicestershire Foxes, Guyana Amazon Warriors and Chittagong Vikings.

Born in Dannevirke in the Manawatu-Wanganui region of New Zealand, Ronchi emigrated to Perth, Western Australia, with his family at an early age. He is an aggressive batsman, he single-handedly punished Karachi Kings bowlers in PSL 3, and helped his team reach the finals. A wicket-keeper, he debuted for Western Australia in January 2002. After a period as second-choice wicket-keeper behind Ryan Campbell, Ronchi became Western Australia's first-choice keeper after Campbell's retirement in 2006. For a period of time between 2007 and 2009, he served as Australia's second-choice keeper behind Brad Haddin, and played several matches for Australia A.

After Haddin broke his finger during the national team's 2008 tour of the West Indies, Ronchi played one Twenty20 International (T20I) and four One-Day International (ODI) matches, and later played two further Twenty20 International matches against the touring South African team in 2009. In February 2012, Ronchi announced his intention to return to New Zealand to further his cricketing career, and signed with the Wellington cricket team the following month. He made his ODI debut for New Zealand in May 2013, becoming the first player to play for both Australia and New Zealand at international level.

Ronchi made his Test debut for New Zealand in May 2015 against England scoring 88 off 70 balls. Ronchi's first innings runs were critical in propping up New Zealand after a shaky start on an overcast morning in Leeds. New Zealand won the match in only their fifth win in England and their first in over 30 years on English soil.

Ronchi announced his retirement from international cricket on 21 June 2017. Former New Zealand captain Brendon McCullum, under whom Ronchi spent most of his career playing under, described Ronchi as someone who, "embodied all that is important about the Black Caps culture. Selfless, respectful, humble and hard working."