Geoff Smith may refer to:

• Geoff Smith (music composer) (born 1966), English composer, academic and vice chancellor of Regent's University London
• Geoff Smith (footballer, born 1928) (1928–2013), English footballer
• Geoff Smith (politician) (born 1934), former Australian politician
• Geoff Smith (Essex cricketer) (born 1935), former English cricketer
• Geoff Smith (Kent cricketer) (1925–2016), English amateur cricketer
• Geoff Smith (New Zealand cricketer) (born 1953), cricketer for Canterbury
• Geoff Smith (cyclist) (1942–2018), Australian Olympic cyclist
• Geoff Smith (decathlete) (born 1945), Australian decathlete
• Geoff Smith (Australian footballer) (born 1948), Australian rules footballer
• Geoff Smith (runner) (born 1953), British marathon runner
• Geoff Smith (mathematician) (born 1953), former leader of the United Kingdom International Mathematical Olympiad team
• Geoff Smith (businessman) (born 1955), Canadian businessman
• Geoff Smith (British musician) (born 1961), English musician
• Geoff Smith (ice hockey) (born 1969), former National Hockey League defenceman

• Geoffrey Smith (disambiguation)
• Jeff Smith (disambiguation)