Swimming at the 2013 World Aquatics Championships – Men's 100 metre backstroke
The men's 100 metre backstroke event in swimming at the 2013 World Aquatics Championships took place on 29–30 July at the Palau Sant Jordi in Barcelona, Spain.Records
Prior to this competition, the existing world and championship records were:Results
Heats
The heats were held at 10:14.
| Rank | Heat | Lane | Name | Nationality | Time | Notes |
| 1 | 6 | 6 | Ashley Delaney | | 53.60 | Q |
| 2 | 5 | 5 | David Plummer | | 53.62 | Q |
| 3 | 6 | 7 | Xu Jiayu | | 53.63 | Q |
| 4 | 5 | 4 | Ryosuke Irie | | 53.66 | Q |
| 5 | 4 | 4 | Jérémy Stravius | | 53.85 | Q |
| 6 | 6 | 4 | Matt Grevers | | 53.92 | Q |
| 7 | 6 | 5 | Kosuke Hagino | | 53.94 | Q |
| 8 | 4 | 3 | László Cseh | | 54.06 | Q |
| 9 | 5 | 2 | Bastiaan Lijesen | | 54.07 | Q |
| 10 | 4 | 2 | Radosław Kawęcki | | 54.20 | Q |
| 10 | 5 | 6 | Camille Lacourt | | 54.20 | Q |
| 12 | 5 | 3 | Chris Walker-Hebborn | | 54.23 | Q |
| 13 | 4 | 5 | Cheng Feiyi | | 54.30 | Q |
| 14 | 6 | 3 | Gareth Kean | | 54.37 | Q |
| 15 | 1 | 5 | Darren Murray | | 54.64 | Q |
| 16 | 4 | 6 | Charles Francis | | 54.72 | Q |
| 17 | 6 | 2 | | | 54.75 | |
| 18 | 5 | 7 | Mirco di Tora | | 54.76 | |
| 19 | 6 | 1 | Yakov-Yan Toumarkin | | 54.85 | |
| 20 | 5 | 9 | Federico Grabich | | 55.03 | |
| 21 | 5 | 1 | Daniel Orzechowski | | 55.09 | |
| 22 | 4 | 7 | Pavel Sankovich | | 55.13 | |
| 23 | 6 | 8 | Lavrans Solli | | 55.52 | |
| 24 | 6 | 9 | I Gede Siman Sudartawa | | 55.55 | |
| 25 | 4 | 0 | Danas Rapšys | | 55.68 | |
| 26 | 5 | 0 | Alexandr Tarabrin | | 55.70 | |
| 27 | 4 | 1 | Felix Wolf | | 55.88 | |
| 28 | 6 | 0 | Lukas Räuftlin | | 56.11 | |
| 29 | 5 | 8 | Pedro Medel | | 56.12 | |
| 30 | 3 | 5 | Martin Baďura | | 56.19 | |
| 31 | 3 | 6 | Charles Hockin | | 56.50 | |
| 32 | 3 | 3 | Danil Bukin | | 56.63 | |
| 33 | 4 | 9 | Guven Duvan | | 56.78 | |
| 34 | 3 | 4 | Jean-François Schneiders | | 56.88 | |
| 35 | 4 | 8 | Shin Hee-Wong | | 56.95 | |
| 36 | 3 | 9 | Boris Kirillov | | 58.17 | |
| 37 | 3 | 8 | Ngou Pok Man | | 58.26 | |
| 38 | 3 | 7 | Heshan Unamboowe | | 58.49 | |
| 39 | 2 | 4 | Artiom Gladun | | 58.60 | |
| 40 | 3 | 0 | Jean Luis Gómez | | 59.30 | |
| 41 | 3 | 1 | Awse Ma'aya | | 59.75 | |
| 42 | 3 | 2 | Khachik Plavchyan | | 59.79 | |
| 43 | 2 | 3 | Gorazd Chepishevski | | | |
| 44 | 2 | 5 | Rodrigo Soriano | | | |
| 45 | 2 | 6 | Jordan Augier | | | NR |
| 46 | 2 | 2 | Hamdan Bayusuf | | | |
| 47 | 2 | 7 | Eisner Barberena | | | |
| 48 | 1 | 3 | Maroun Waked | | | |
| 49 | 2 | 1 | Yaaqoub Al-Saadi | | | |
| 50 | 2 | 8 | Victor Torres | | | |
| 51 | 2 | 0 | Erdenemunkh Demuul | | | |
| 52 | 1 | 4 | Faraj Saleh Faraj Sultan | | | |
| 53 | 2 | 9 | Andrianirina Lalanomena | | | |
Semifinals
The semifinals were held at 18:18.Semifinal 1
Semifinal 2
Final
The final was held at 19:06.
| Rank | Lane | Name | Nationality | Time | Notes |
| 4 | Matt Grevers | | 52.93 | |
| 5 | David Plummer | | 53.12 | |
| 3 | Jérémy Stravius | | 53.21 | |
| 4 | 6 | Ryosuke Irie | | 53.29 | |
| 5 | 2 | Camille Lacourt | | 53.51 | |
| 6 | 1 | Ashley Delaney | | 53.55 | |
| 7 | 7 | Kosuke Hagino | | 53.93 | |
| 8 | 8 | Gareth Kean | | 54.25 | |
