Hamish John Hamilton Marshall (born 15 February 1979) is a former New Zealand cricketer, who played all formats of the game for New Zealand. He is the identical twin brother of James Marshall. Hamish and James became the third pair of twins (after Liz and Rose Signal of New Zealand in 1984, and Mark and Steve Waugh) to play Test cricket, and are the second identical pair.

Marshall, a middle-order batsman, made his Test debut against South Africa in December 2000. Batting at No. 7, he made an unbeaten 40. Marshall has also played for Northland in the Hawke Cup.

He played for the Royal Bengal Tigers in the Indian Cricket League until the ICL collapsed in mid-2009. In February 2009, Indian cricketers Sachin Tendulkar and Dinesh Karthik had to withdraw from playing in a friendly T20 cricket match between Australian Cricketers' Association and New Zealand Cricket Players Association, because of Marshall's involvement in the match. Due to the rivalry between the IPL and the ICL, the BCCI asked Tendulkar and Karthik not to play in the match. The BCCI cited the involvement of Marshall in one of the teams for not fielding its cricketers.

In October 2010, it was announced that Marshall would tour India with the Ireland cricket team. It was hoped that it would assist his integration into the team in the event the ICC allowed him to play for Ireland in ODIs.

Marshall arrived at Gloucestershire County Cricket Club in 2006 and has played every season since. In 2015 he was awarded a benefit season.

In 2011, Both Hamish Marshall and Kevin O'Brien became the first pair of batsmen to score centuries in a single T20, when they did it for Gloucestershire

In June 2012, Marshall was appointed as Gloucestershire County Cricket Club's captain for their Twenty20 campaign.

In the 2013 County Season, Marshall passed 1000 County Championship runs for the first time since 2006, averaging 50.35. He was rewarded with a new three-year contract taking him to 37 years of age.