| # | Name | Team | Time | Date | Meet |
|---|---|---|---|---|---|
| 1 | Daiya Seto |
JPN | 1:55.55 | 01/18 | 2020 FINA Champions Series
Beijing, CHN |
| 2 | Shun Wang |
CHN | 1:56.25 | 10/19 | 2019 7th CISM Military World Games
Wuhan, CHN |
| 3 | Haiyang Qin |
CHN | 1:56.79 | 10/19 | 2019 7th CISM Military World Games
Wuhan, CHN |
| 4 | Michael Andrew |
USA | 1:56.83 | 03/07 | 2020 Pro Swim Series
Des Moines, IA |
| 5 | Mitchell Larkin |
AUS | 1:57.06 | 08/03 | 2019 FINA World Cup
Tokyo, JPN |
| 6 | Chase Kalisz |
USA | 1:57.28 | 12/05 | 2019 Toyota US Open
Atlanta, GA |
| 7 | Jeremy Desplanches |
SUI | 1:57.59 | 12/15 | Swim Cup Amsterdam
Amsterdam, NED |
| 7 | Carson Foster |
USA | 1:57.59 | 12/05 | 2019 Toyota US Open
Atlanta, GA |
| 9 | Sam Stewart |
USA | 1:57.76 | 03/01 | 2020 Speedo Champions Series
College Station, TX |
| 10 | Andrew Seliskar |
USA | 1:58.01 | 03/07 | 2020 Pro Swim Series
Des Moines, IA |
| 11 | Alberto Razzetti |
ITA | 1:58.09 | 08/13 | 2020 Sette Colli Trophy
Rome, ITA |
| 12 | Kosuke Hagino |
JPN | 1:58.20 | 08/29 | 2020 Tokyo Special Swimming Tournament
Tokyo, JPN |
| 13 | Shaine Casas |
USA | 1:58.54 | 11/23 | Art Adamson Invitational
College Station, TX |
| 14 | Hugo Gonzalez |
ESP | 1:58.73 | 12/15 | Swim Cup Amsterdam
Amsterdam, NED |
| 15 | Ryan Lochte |
USA | 1:58.89 | 12/05 | 2019 Toyota US Open
Atlanta, GA |
| 16 | Philip Heintz |
GER | 1:58.92 | 01/24 | 2020 Luxembourg Euro Meet
Luxembourg, LUX |
| 17 | Josh Prenot |
USA | 1:59.04 | 08/03 | 2019 FINA World Cup
Tokyo, JPN |
| 18 | Hubert Kos |
HUN | 1:59.06 | 07/26 | 4 Nations Meet
Budapest, HUN |
| 19 | Ippei Miyamoto |
JPN | 1:59.11 | 02/15 | 2020 Konami Open
Tokyo, JPN |
| 20 | Danas Rapsys |
LTU | 1:59.14 | 08/16 | 2019 FINA World Cup
Singapore, SGP |
| 21 | Yuuki Ikari |
JPN | 1:59.27 | 09/06 | 2019 JPN Student Champs
Tokyo, JPN |
| 22 | Keita Sunama |
JPN | 1:59.28 | 11/08 | 2019 FINA World Cup
Doha, QAT |
| 23 | Takumi Uchiyama |
JPN | 1:59.30 | 09/07 | 2019 JPN Student Champs
Tokyo, JPN |
| 24 | Ron Polonsky |
ISR | 1:59.45 | 12/15 | Swim Cup Amsterdam
Amsterdam, NED |
| 25 | Takeharu Fujimori |
JPN | 1:59.59 | 08/29 | 2020 Tokyo Special Swimming Tournament
Tokyo, JPN |
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