| POS | Rank | Heat | BIB | ATHLETE | COUNTRY | RESULTS | ms* | WIND |
|---|---|---|---|---|---|---|---|---|
| 1 | 1 | 1 | 1606 | Blessing Akwasi AFRIFAH |
ISR |
20.17 Q NU20R | -0.2 | |
| 2 | 1 | 2 | 1280 | Letsile TEBOGO |
BOT |
20.23 Q | -1.2 | |
| 3 | 1 | 3 | 1652 | Bryan LEVELL |
JAM |
20.34 Q PB | +0.1 | |
| 4 | 2 | 1 | 1854 | Benjamin RICHARDSON |
RSA |
20.39 Q | -0.2 | |
| 5 | 2 | 3 | 1231 | Calab LAW |
AUS |
20.42 Q PB | +0.1 | |
| 6 | 3 | 1 | 1496 | Jeriel QUAINOO |
GBR |
20.43 q | -0.2 | |
| 7 | 3 | 3 | 1987 | Brandon MILLER |
USA |
20.57 q | +0.1 | |
| 8 | 4 | 3 | 1925 | Puripol BOONSON |
THA |
20.61 | +0.1 | |
| 9 | 5 | 3 | 1850 | Bradley OLIPHANT |
RSA |
20.75 | +0.1 | |
| 10 | 2 | 2 | 1954 | Anthony SMITH |
TUR |
20.83 Q NU20R | -1.2 | |
| 11 | 3 | 2 | 1234 | Aidan MURPHY |
AUS |
20.84 | -1.2 | |
| 12 | 4 | 1 | 1762 | Adekalu Nicholas FAKOREDE |
NGR |
20.93 | -0.2 | |
| 13 | 5 | 1 | 1823 | José FIGUEROA |
PUR |
20.94 PB | -0.2 | |
| 14 | 6 | 1 | 1634 | Loris TONELLA |
ITA |
20.95 PB | -0.2 | |
| 15 | 4 | 2 | 1725 | Muhd Azeem FAHMI |
MAS |
20.97 | -1.2 | |
| 16 | 7 | 1 | 1285 | Renan CORREA |
BRA |
20.98 | -0.2 | |
| 17 | 5 | 2 | 1919 | Erik ERLANDSSON |
SWE |
21.03 | -1.2 | |
| 18 | 6 | 2 | 1331 | Oscar Manuel BALTAN |
COL |
21.05 | -1.2 | |
| 19 | 6 | 3 | 1736 | Jose RODRIGUEZ |
MEX |
21.13 | +0.1 | |
| 20 | 7 | 3 | 1254 | Wanya MCCOY |
BAH |
21.23 | +0.1 | |
| 21 | 7 | 2 | 1348 | Roko FARKAÅ |
CRO |
21.30 | .298 | -1.2 |
| 22 | 8 | 2 | 2020 | Sitali KAKENE |
ZAM |
21.30 | .300 | -1.2 |
| 23 | 8 | 1 | 1926 | Thawatchai HIMAIAD |
THA |
21.86 | -0.2 | |
| 24 | 8 | 3 | 1550 | Nazzio JOHN |
GRN |
26.38 | +0.1 |
ms - Milliseconds - shown when two or more competitors finish with the same time down to hundredths of a second