Marianne Vos (; born 13 May 1987) is a Dutch multi-discipline cyclist who currently rides for UCI Women's WorldTeam under a lifetime contract.

After winning a junior European and World Championship in road racing, she continued her success in senior cycling by becoming World Champion in cyclo-cross and road racing at the age of 19. Vos added track racing World Championships when she won the points race in 2008 and the scratch race in 2011. At the 2008 Summer Olympics, she won the gold medal in the points race; at the 2012 Summer Olympics, gold in the women's road race. She is a 3 times World Road Race Champion – in 2006, 2012 and 2013 – and 8 times World Cyclo-cross Champion – in 2006, 2009, 2010, 2011, 2012, 2013, 2014 and 2022.

She has multiple wins at the Giro Donne, Holland Ladies Tour, Ladies Tour of Norway, La Flèche Wallonne, Ronde van Drenthe, Trofeo Alfredo Binda-Comune di Cittiglio, Emakumeen Euskal Bira and GP de Plouay – Bretagne; also she ranked first in points in the UCI Women's Road World Cup five times and in the 2019 UCI Women's World Tour. She has 24 races at the UCI Cyclo-cross World Cup, and claimed the first place overall in the 2018–19 season.

Vos was a founding member of Le Tour Entier, which campaigned for a Women's Tour de France and improvements to women's cycling generally. Vos has drawn comparison to Eddy Merckx as being "the finest cyclist of [her] generation".

Early years Marianne Vos was born in 's-Hertogenbosch, North Brabant and lives in the small village of Babyloniënbroek. She started cycling when she was six years old after watching her older brother who was already a cyclist.Persoonlijke gegevens Marianne Vos , mariannevos.nl At first she trained with her brother's team as she was not allowed to participate in races; during the winter she started training in cyclo-cross as well. When she was eight, she was able to ride races. Vos also participated in speed skating and inline speed skating. At 14 she replaced inline skating with mountain biking.

Professional career 2000s In 2002, she won two national championships and finished second in another. She became Dutch mountain biking champion and won the national junior road race,Mountain bike results , mariannevos.nlNK NEDERLAND NIEUWELINGEN 2002, cyclebase.nl while she finished second in the Dutch time trial championship behind Roxane Knetemann.NK NEDERLAND TIJDRIT NIEUWELINGEN 2002, cyclebase.nl In 2003 Vos successfully defended her national junior mountain bike title. At the time trial championships she again finished second, this time behind Maxime Groenewegen while 2002 champion Roxane Knetemann finished fourth.NK NEDERLAND TIJDRIT NIEUWELINGEN 2003, cyclebase.nl

In 2004, Vos excelled in cyclo-cross for the first time when she won her first international race in Gieten, beating Birgit Hollmann and Arenda Grimberg.Gieten, Cyclocross (V) 2004, dewielersite.net She finished third in the Dutch junior road race and time trial, unable to beat Ellen van Dijk who won both events.NK NEDERLAND JUNIOREN 2004, cyclebase.nlNK NEDERLAND TIJDRIT JUNIOREN 2004, cyclebase.nl Continuing her cyclo-cross season she added wins in Surhuisterveen and Pijnacker–Nootdorp. In the last she beat Hanka Kupfernagel and Daphny van den Brand.Surhuisterveen Centrumcross (V) 2004, dewielersite.netPijnacker-Nootdorp, Cyclocross (V) 2004, dewielersite.net For the third straight time she became Dutch junior champion in mountain biking before heading to Verona for the junior road world championship. Aged 17 and a first-year junior, Vos broke away in the final of five laps on the climb. She stayed clear and became world champion.Vrooming Vos wins Junior crown, eurosport.com, 1 October 2004 At the end of 2004 Vos was elected Sport FM Sportswoman of the year 2004.Sport FM Verkiezing , mariannevos.nl

In 2005, junior world champion Vos claimed her first Dutch junior national road title in front of 2004 champion Ellen van Dijk.NK NEDERLAND JUNIOREN 2005, cyclebase.nl Van Dijk was able to defend her time trial title successfully before Maxime Groenewegen, while Vos finished third again.NK NEDERLAND TIJDRIT JUNIOREN 2005, cyclebase.nl Participating as a senior at the Dutch cyclo-cross championship Vos finished second behind Daphny van den Brand.NK Cyclocross, Elite, Nederland (V) 2005, dewielersite.net She then won her fourth Dutch junior mountain bike title, before winning a junior World Cup meeting in Houffalize. She finished fourth at the world junior cyclo-cross championship and won a race held in Heeswijk a week later. From then on Vos occasionally took part in senior road races. One was the Omloop van Borsele which she won by beating Adrie Visser.OMLOOP VAN BORSELE 2005, cyclebase.nl Including Vos's world championship in 2004 the Netherlands had won the last three editions of the junior championship (the others being Loes Markerink in 2002 and Suzanne de Goede in 2003). Vos's goal was to add a fourth title by defending her title in Salzburg, but she finished second behind Denmark's Mie Bekker Lacota.2005 Junior World Championships Day 6 (Road Races) , britishcycling.org Vos competed in cyclo-cross again. Six weeks after her silver medal in Salzburg she won in Harderwijk and Suameer.Harderwijk, Cyclocross (V) 2005, dewielersite.netSuameer (Ned) 15 October 2005 , mariannevos.nl Her next aim was the European cyclo-cross championship in Pontchâteau, France. She started in the elite field and was expected to assist Daphny van den Brand but instead beat the favourites, including van den Brand who won silver.European Cyclo-Cross Championships 2005 , britishcycling.org After the European championship she won two cyclo-crosses in Gieten and Loenhout.Gieten, Cyclocross (V) 2005, dewielersite.netLoenhout, Cyclocross (V) 2005, dewielersite.net Vos was named Sport FM Sportswoman of the year 2005.

In 2006, Vos won her first race on 1 January in Pétange.Pétange, cyclocross (V) 2006, dewielersite.net Less than a week later, the Dutch championship in Huijbergen was again a clash between Vos and van den Brand, this time van den Brand became champion while Vos took silver.NK Cyclocross, Elite, Nederland (V) 2006, dewielersite.nl Vos then concentrated on the world cyclo-cross championship in her own country, in Zeddam. On 29 January 2006 she was in excellent form, with only Hanka Kupfernagel and Daphny van den Brand able to catch her. Van den Brand changed bikes and lost her lead, finishing one minute behind to take bronze. The gold medal was decided in the last metres when Vos outsprinted Kupfernagel.Vos takes Cyclo-cross world championships at the line, cyclingnews.com, 29 January 2006 During the 2006 road season Vos took part in the Gracia–Orlová Tour in the Czech Republic and won the 5th stage, 2:20 ahead of the pack.Gracia – Orlova (V) 2006, dewielersite.net In that same week she won the Omloop van Borsele for the second time in a row, beating Vera Koedooder and Bertine Spijkerman.OMLOOP VAN BORSELE 2006, cyclebase.nl In Spain she took part in the Emakumeen Bira and won the 1st stage.Emakumeen Bira (V) 2006, dewielersite.net She then travelled back to the Netherlands for the national road championship in Maastricht. Vos cycled in a group containing all the favourites for the race and outsprinted Sharon van Essen and Suzanne de Goede to win the title.NK NEDERLAND 2006, cyclebase.nl On 28 June 2006 Vos was named Dutch Sports Talent of the year 2006 ahead of pentathlete Laurien Hoos and gymnast Epke Zonderland. The additional award was handed to her by former swimming star Erica Terpstra.Vos gekozen tot Talent van het Jaar, wielerrevue.nl, 28 June 2006

A few weeks later she was strongest in the Omloop van Valkenburg where she again finished in front of de Goede.OMLOOP VAN VALKENBURG 2006, cyclebase.nl Vos was still in the junior age category and took part in the European road race championship in Valkenburg. She won the sprint against Italy's Tatiana Guderzo.EK op de weg, Beloften (V) 2006, dewielersite.net She went on to win two stages and overall in the Tour Féminin en Limousin.Tour Féminin en Limousin 2006, dewielersite.net In July, she won criteriums in Steenwijk, Draai van de Kaai, Oostvoorne and Pijnackerow.Marianne Vos:Wielrennen , mariannevos.nl In August 2006, she signed a five-year deal with the Dutch team DSB–Ballast Nedam.Vos with DSB for five years, cyclingnews.com, 7 August 2006 It wasn't long before she won her first race with DSB. At the end of the 4th stage of the Trophée d'Or Féminin Vos beat Tanja Schmidt-Hennes.Trophée d'Or Féminin 2006, dewielersite.net

With the silver medal won in 2005 in mind, Vos returned to Salzburg for the senior road race at the world road race championship. Vos remained in the bunch until Nicole Cooke started the action in the fifth of six laps. Cooke attacked on the second climb and only Nicole Brändli and Vos were able to catch her. A few others came back a few kilometres later. Judith Arndt left the group by herself. Vos made the jump to Arndt and they led for a few minutes until the chasers came back. From then, the group stayed together apart from attacks on either the flat road or the second climb. The race went to a sprint of 15 riders, with Vos taking another rainbow jersey.Vos takes her second rainbow in a year, cyclingnews.com, 23 September 2006 In the European cyclo-cross championship Vos won a bronze medal behind Daphny van den Brand and Hanka Kupfernagel.EC Cyclo-cross 2006 , wielercomite-huybergen.nl

In 2007, Vos won La Flèche Wallonne Féminine and the Rund um die Nürnberger Altstadt World Cup events before going on to win the series overall. She also finished second in the road race world championships, conceding her title to Marta Bastianelli of Italy who broke away in the last 15 km of the race.

In 2008, Vos added a track cycling world title to her list when she won the women's points race at the track cycling world championships. In doing so, she became the first woman to have held world championship titles on the road, track and cyclo-cross. Vos became Olympic points race champion at the 2008 Summer Olympics in Beijing.

In 2009, Vos started by winning the cyclo-cross world championships. She also had success on the road, as she won La Flèche Wallonne Féminine for the third time. Later that year, she finished second in the road world championships.

2010s In 2010, Vos became cyclo-cross world champion again and won the silver medal in the road world championships for the fourth time in a row.

In 2011, Vos won the Giro d'Italia Femminile, winning 5 stages in the process as well as the points and mountains classifications. Later that year, she captured her fifth consecutive silver medal at the road world championships. She won the scratch race in the track world championships, and the world cyclo-cross championship. Vos was appointed as a member of the inaugural UCI Athletes' Commission in 2011.

In 2012, Vos won the world cyclo-cross championship again. On the road, she recorded wins at the Ronde van Drenthe and the Trofeo Alfredo Binda, but fractured her collarbone after colliding with a motorcycle during the Valkenburg Hills Classic on 25 May. Although she was still able to finish the race in second place and did not require surgery, she did not resume racing until the Dutch national championships on 23 June in which she finished second, 3 seconds behind Annemiek van Vleuten. She then raced in the Giro Donne, where for the second year running she won five stages and the general classification. On 29 July she won gold in the London Olympic Games road race winning the sprint from a 3-woman breakaway which formed following the final lap of the Box Hill, Surrey circuit on the return to London. She finished 16th in the time trial. In September, Vos won her second road race world title in Valkenburg, Netherlands after five second places in a row (2007–2011).