Eight fastest athletes advanced to Final A, the others advanced to Final B, or C according to their times.
Rank | Heat | Lane | Athlete | Result | Notes | Q | 1 | 1 | 3 | {{flagIOCathlete|Noah Lyles|USA|2014 Summer Youth}} | 20.71 | PB | FA |
2 | 2 | 4 | {{flagIOCathlete|Baboloki Thebe|BOT|2014 Summer Youth}} | 20.99 | FA |
3 | 3 | 8 | {{flagIOCathlete|Yang Chun-han|TPE|2014 Summer Youth}} | 21.03 | PB | FA |
4 | 1 | 8 | {{flagIOCathlete|Jun Yamashita|JPN|2014 Summer Youth}} | 21.11 | PB | FA |
5 | 2 | 3 | {{flagIOCathlete|Chad Walker|JAM|2014 Summer Youth}} | 21.17 | FA |
6 | 3 | 6 | {{flagIOCathlete|Filippo Tortu|ITA|2014 Summer Youth}} | 21.38 | PB | FA |
7 | 3 | 5 | {{flagIOCathlete|Brian Kasinda|ZAM|2014 Summer Youth}} | 21.40 | FA |
8 | 1 | 5 | {{flagIOCathlete|Akanni Hislop|TTO|2014 Summer Youth}} | 21.42 | FA |
9 | 3 | 2 | {{flagIOCathlete|Aliffer dos Santos|BRA|2014 Summer Youth}} | 21.64 | FB |
10 | 1 | 7 | {{flagIOCathlete|Jordan Csabi|AUS|2014 Summer Youth}} | 21.70 | FB |
11 | 1 | 6 | {{flagIOCathlete|Erick Joel Sánchez|DOM|2014 Summer Youth}} | 21.72 | PB | FB |
12 | 2 | 9 | {{flagIOCathlete|Shermar Paul|CAN|2014 Summer Youth}} | 21.80 | FB |
13 | 2 | 5 | {{flagIOCathlete|Ramarco Thompson|BAR|2014 Summer Youth}} | 21.95 | FB |
14 | 1 | 4 | {{flagIOCathlete|Wojciech Kaczor|POL|2014 Summer Youth}} | 22.01 | FB |
15 | 2 | 2 | {{flagIOCathlete|Coull Graham|ANT|2014 Summer Youth}} | 22.08 | FB |
16 | 3 | 9 | {{flagIOCathlete| Naludol Asavaruengsri|THA|2014 Summer Youth}} | 22.21 | FB |
17 | 3 | 7 | {{flagIOCathlete|Dwayne Koroka|PNG|2014 Summer Youth}} | 22.38 | PB | FC |
18 | 2 | 8 | {{flagIOCathlete|Kionje Somner|BER|2014 Summer Youth}} | 22.39 | FC |
19 | 3 | 3 | {{flagIOCathlete|Vladislav Grigoriyev|KAZ|2014 Summer Youth}} | 22.40 | FC |
20 | 2 | 7 | {{flagIOCathlete|Eugene Kohun|ISV|2014 Summer Youth}} | 22.60 | FC |
21 | 3 | 4 | {{flagIOCathlete|Harouna Ndaye Abraham|CHA|2014 Summer Youth}} | 23.19 | FC |
22 | 2 | 6 | {{flagIOCathlete|Mas Wafiyyuddin Sharani|BRU|2014 Summer Youth}} | 23.44 | PB | FC |
23}} | 1 | 2 | {{flagIOCathlete|Jorge Sánchez|PUR|2014 Summer Youth}} | 99.97|DNF}} | FC |
Rank | Final Placing | Lane | Athlete | Result | Notes | {{gold01}} | 1 | 7 | {{flagIOCathlete|Noah Lyles|USA|2014 Summer Youth}} | 20.80 |
{{silver02}} | 2 | 6 | {{flagIOCathlete|Baboloki Thebe|BOT|2014 Summer Youth}} | 21.20 |
{{bronze03}} | 3 | 4 | {{flagIOCathlete|Yang Chun-han|TPE|2014 Summer Youth}} | 21.31 |
4 | 4 | 2 | {{flagIOCathlete|Akanni Hislop|TTO|2014 Summer Youth}} | 21.57 |
5 | 5 | 3 | {{flagIOCathlete|Brian Kasinda|ZAM|2014 Summer Youth}} | 21.61 |
6 | 6 | 5 | {{flagIOCathlete|Jun Yamashita|JPN|2014 Summer Youth}} | 21.62 |
7}} | 99}} | 8 | {{flagIOCathlete|Chad Walker|JAM|2014 Summer Youth}} | 99.98|DSQ}} |
7}} | 99}} | 9 | {{flagIOCathlete|Filippo Tortu|ITA|2014 Summer Youth}} | 99.99|DNS}} |
Rank | Final Placing | Lane | Athlete | Result | Notes | 1 | 7 | 4 | {{flagIOCathlete|Aliffer dos Santos|BRA|2014 Summer Youth}} | 21.68 |
2 | 8 | 5 | {{flagIOCathlete|Jordan Csabi|AUS|2014 Summer Youth}} | 21.84 |
3 | 9 | 7 | {{flagIOCathlete|Erick Joel Sánchez|DOM|2014 Summer Youth}} | 21.89 |
4 | 10 | 6 | {{flagIOCathlete|Shermar Paul|CAN|2014 Summer Youth}} | 21.93 |
5 | 11 | 8 | {{flagIOCathlete|Ramarco Thompson|BAR|2014 Summer Youth}} | 22.31 |
6 | 12 | 2 | {{flagIOCathlete|Coull Graham|ANT|2014 Summer Youth}} | 22.34 |
7 | 13 | 3 | {{flagIOCathlete| Naludol Asavaruengsri|THA|2014 Summer Youth}} | 22.44 |
8}} | 99}} | 9 | {{flagIOCathlete|Wojciech Kaczor|POL|2014 Summer Youth}} | 99.98|DSQ}} |