The boy's 29er competition at the 2021 Youth Sailing World Championships took place between December 11 and 18 2021. 48 sailors from 24 nations were due to compete. Hugo Revil and Karl Devaux of France won the event.

Results RankHelmCrewCountryR1R2R3R4R5R6R7R8R9R10R11R12R13TotalNett1Hugo RevilKarl Devaux3.03.03.04.05.04.010.02.04.0(11.0)(11.0)1.07.068.046.02Mateo Codoñer AlemanySimon Codoñer Alemany(18.0)6.01.02.08.05.07.0 SP21.010.08.01.0(12.0)2.081.051.03Ian NyenhuisNoah Nyenhuis1.04.0(20.0)3.0(25.0 UFD)10.01.04.07.05.010.06.08.0104.059.04Simon KarlemoLasse Lindell6.0(12.0)(17.0)11.01.012.03.08.09.09.02.011.01.0102.073.05Maximo VidelaTadeo Funes de Rioja7.09.05.0(19.0)4.01.011.010.05.0(16.0)12.08.03.0110.075.06Alfonso PalumboDomenico Palumbo(17.0)10.09.01.02.011.0(17.0)7.015.07.013.04.06.0119.085.07Jens-Christian Dehn-ToftehøjCarl Emil Sloth2.014.02.05.011.09.0(19.0)(16.0)6.03.07.014.014.0122.087.08Ryotaro UdagawaKaito Suzuki(22.0)18.016.07.0(20.0)3.02.06.03.018.06.02.09.0132.090.09Lorenzo BallestrinPedro Breternitz15.01.0(21.0)13.06.015.016.0(25.0 DSQ)1.01.03.07.017.0141.095.010JJ KlempenSteven Hardee4.05.0(18.0)16.09.07.0(21.0)15.011.010.09.09.012.0146.0107.011Attila TóthLevente Borda9.011.06.015.017.08.0(18.0)13.017.02.0(18.0)5.05.0144.0108.012Ben O’ShaughnessyJames Dwyer Matthews10.07.04.017.015.0(21.0)12.012.016.013.04.0(20.0)4.0155.0114.013Carl KrauseMax Georgi11.02.013.08.018.0(22.0)13.03.012.015.017.0(25.0 DSQ)11.0170.0123.014Robbert Hidde HuismanFrank Boer5.08.014.012.010.0(23.0)9.021.018.06.0(22.0)3.018.0169.0124.015Malcolm BjörssonJohan Bengtsson14.013.010.010.07.0(19.0)14.017.08.04.0(23.0)13.016.0168.0126.016Leo WilkinsonSam Jones(19.0)(19.0)12.06.019.013.07.09.02.012.015.019.0 SP213.0165.0127.017Tibor NevelosAdam Nevelos12.022.015.014.0(25.0 UFD)18.015.05.016.0 SP2(25.0 DSQ)5.010.010.0192.0142.018Benjamín Guzmán KennedyDiego José Tessada Araya21.0(24.0)(25.0 DNS)9.03.016.06.018.020.020.014.018.015.0209.0160.019Maksim BondarDanila Rerikh8.020.019.020.014.02.0(23.0)14.023.019.08.015.0(25.0 DSQ)210.0162.020Gustaw KwiekTomasz Santorowski20.017.08.0(21.0)16.06.020.011.013.017.019.016.0(25.0 BFD)209.0163.021Jackson MacaulayAndreas Steinitz16.021.07.0(24.0)12.014.08.019.0(22.0)14.020.019.019.0215.0169.022Markus BerthetRudolf Ugelstad13.015.0(22.0)18.013.020.04.0(23.0)21.021.021.021.021.0233.0188.023Antinio GarcíaMartín Bartesagui(24.0)16.011.022.021.017.022.020.019.0(23.0)16.022.020.0253.0206.024Nibras Al AwaisiAli Al Saadi23.023.023.023.022.0(24.0)(24.0)22.024.022.024.023.022.0299.0251.0

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