The men's hammer throw at the 2021 World Athletics U20 Championships was held at the Kasarani Stadium on 18 and 20 August.

Records Standing records prior to the 2021 World Athletics U20 ChampionshipsWorld U20 Record85.57Barcelona, Spain14 July 2012Championship RecordWorld U20 Leading81.21Bamberg, Germany26 June 2021

Results Qualification The qualification took place on 18 August, in two groups, with Group A starting at 09:08 and Group B starting at 10:36. Athletes attaining a mark of at least 74.00 metres ( Q ) or at least the 12 best performers ( q ) qualified for the final.

Rank Group Name Nationality Round Mark Notes 1 2 3 1 B Jan Doležálek 77.58 77.58 , 2 A Orestis Ntousakis 76.25 76.25 3 B Ronald Mencía 73.59 74.98 74.98 4 A Ethan Katzberg 74.39 74.39 5 A Jean-Baptiste Bruxelle 74.06 74.06 6 B Dawid Piłat 72.44 72.85 72.85 7 B Theodoros Ziogas 72.61 72.61 8 A Juan Jiménez 71.05 69.44 68.23 71.05 9 B Arttu Härkönen 70.63 69.74 70.63 , 10 B Valentin Andreev 70.54 70.54 11 B Davide Costa 65.50 70.31 67.31 70.31 12 A Oleg Yakushkin 70.29 70.29 13 A Tomasz Ratajczyk 69.43 69.43 14 A Jan Emberšič 67.78 67.78 15 A Emirhan Şipşak 64.35 67.11 67.11 16 A Sebastian Tommasi 65.73 63.53 65.73 17 B Aldo Zavala 65.65 65.65 18 A Cristian Meheș 65.08 65.08 19 B Balázs Katavics 64.06 64.06 20 B Vipin Kumar 62.24 63.17 63.17 21 A Makars Korotkovs 62.36 62.47 62.47 B Dragoș Nicorici A Gregorio Giorgis B Pieter-Juan Vorstman

Final The final was held on 20 August at 16:17.

Rank Name Nationality Round Mark Notes 1 2 3 4 5 6 Jan Doležálek 77.35 73.87 77.83 77.83 Orestis Ntousakis 75.69 77.78 73.54 77.78 Jean-Baptiste Bruxelle 75.86 77.70 73.88 74.07 77.70 4 Dawid Piłat 72.14 75.95 72.14 77.09 72.00 77.09 5 Oleg Yakushkin 68.84 71.41 73.20 73.31 73.31 6 Theodoros Ziogas 69.02 70.44 71.39 70.91 72.24 72.24 7 Ronald Mencía 69.84 68.83 71.60 71.60 8 Davide Costa 67.56 68.67 70.62 70.62 9 Valentin Andreev 68.89 69.42 67.29 69.42 10 Juan Jiménez 67.90 68.63 68.63 11 Arttu Härkönen 67.23 68.34 68.34 Ethan Katzberg

References