There have been 740 champions in kart racing classes sanctioned by the Commission Internationale de Karting () since 2007, when KF and KZ regulations were introduced to international competition. OK replaced KF as the senior regulation in 2016, also when OK-Junior () replaced its KF-Junior () counterpart for drivers under the age of 15. KZâÂÂformerly known as KZ1âÂÂand KZ2 have remained the gearbox classes throughout this span. Academy and 60 Mini have since been introduced as junior categories by the in 2010 and 2020, respectively. Young drivers typically progress to junior formulae before reaching the gearbox classesâÂÂreferred to as "the domain of factory teams and professional drivers" by the âÂÂas the minimum age for progression has decreased throughout the 21st century.
IAME classes also feature prominently on the international kart racing calendar, as well as the Rotax Max Challenge (2000âÂÂpresent) and ROK Cup (2003âÂÂpresent), which operate under manufacturer-designated classes approved by the . The inaugural editions of several competitions pre-date this list: Karting World Championship (1964), Karting European Championship (1970), Trofeo delle Industrie (1971), Karting Asia-Pacific Championship (1981), Andrea Margutti Trophy (1990), CIK-FIA Viking Trophy (1990), Monaco Kart Cup (1995), South Garda Winter Cup (1996), and WSK International Series (2006). The Trofeo delle Industrie, Andrea Margutti Trophy, and South Garda Winter CupâÂÂall Italian competitionsâÂÂwere each granted international status by the .
The superkart category also pre-dates the list, reaching the international stage as early as 1976. Several national championships have held international classes and are not included. Marco Ardigò won a record 22 international titles from 2007âÂÂincluding three World and three European ChampionshipsâÂÂuntil his retirement in 2019, followed by Max Verstappen's 13 titles from 2010 to 2013. Since 2007, Italian drivers have won 201 titlesâÂÂ97 of which are in the gearbox classesâÂÂwith British drivers on 113, and Dutch drivers on 72. Three women feature on this list: Beitske Visser, Marta GarcÃÂa, and Luna Fluxá.
KF1âÂÂreplaced by Super-KF (SKF) from 2009 to 2010âÂÂwas the primary senior class in competition from 2007 to 2012 for drivers aged 15 and over. SKF differed from KF1 with non-homologated engines, whilst retaining the free chassis, brakes, and tyres. It hosted the World Championship in each year of its existence bar 2010, where it was replaced by KF2.
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Additional international titles that have been held in KF1 / SKF since 2007:
KF2 was the secondary senior class from 2007 to 2012 for drivers aged 15 and over, before becoming the primary class in 2013 as KF. It hosted the World Championship four times: 2010, 2013, 2014, and 2015.
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</div> <small>Italics indicates the championships where KF / KF2 was the secondary senior class.</small>
Additional international titles that have been held in KF / KF2 since 2007:
Original Kart (OK) has been the primary senior class since 2016 for drivers aged 14 and over, hosting the World Championship each year since its inception.
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Additional international titles that have been held in OK since 2016:
OK-National (OK-N) was introduced as the secondary senior class in 2023 for drivers aged 15 and over, and has hosted a World Cup since 2024.
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</div> <small>Italics indicates the championships where OK-N was the secondary senior class.</small>
Additional international titles that have been held in OK-N since 2023:
KF3 was introduced as the junior class in 2007 for drivers aged 13 to 15, being upgraded to World Championship status in 2010 as the U18 World Championship; it was renamed KF-Junior (KF-J) in 2013.
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Additional international titles that have been held in KF-J / KF3 since 2007:
OK-Junior (OK-J) replaced KF-Junior as the junior class in 2016 for drivers aged 12 to 14, and has hosted a World Championship each year since.
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Additional international titles that have been held in OK-J since 2016:
OKN-Junior (OKN-J) was introduced as a secondary junior class in 2023 for drivers under the age of 15, and will host a World Cup from 2025 onwards.
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</div> <small>Italics indicates the championships where OKN-J was the secondary junior class.</small>
Additional international titles that have been held in OKN-J since 2023:
KZ1 became the primary gearbox class for drivers aged 15 and over in 2007 and was renamed to KZ in 2013, when it was upgraded to World Championship status.
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Additional international titles that have been held in KZ / KZ1 since 2007:
KZ2 was introduced as the secondary gearbox class for drivers aged 15 and over in 2007, and has hosted a World Cup since 2011.
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</div> <small>Italics indicates the championships where KZ2 was the secondary gearbox class.</small>
Additional international titles that have been held in KZ2 since 2007:
KZ2-Masters (KZ2-M) was introduced at the World Cup in 2022 as a gearbox class for drivers aged 35 and over.
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Additional international titles that have been held in KZ2-M since 2022:
The superkart class ran from 2002 to 2019 at the European Championship, with a secondary division also contested in 2003 and 2004.
The Academy Trophy was inaugurated in 2010 as a spec series for junior drivers aged 12 to 14. The competition was divided into Junior (12âÂÂ14) and Senior (14âÂÂ16) classes in 2025.
Additional international titles that have been held in Academy since 2010:
60 Mini has been present in international competition from as early as 2010 for drivers under the age of 12, but was not formally recognised by the until 2020. This table includes results from Mini Gr.3, a derivative subclass using IAME engines.
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Additional international titles that have been held in 60 Mini since 2020:
The following is a list of drivers with at least five titles in international kart racing since 2007.
<small>Last updated on 22 March 2026.</small>
The following is a list of drivers with at least five titles in international kart racing since 2007, up to and including the year they turned 16âÂÂthe minimum age to compete in Formula 4 and Formula Renault 2.0 throughout the span.
<small>Last updated on 22 March 2026.</small>
<small>Last updated on 22 March 2026.</small>