| RK | LN | Name | Time | Gap | FINA | Q? |
|---|---|---|---|---|---|---|
| 1 | 2 | Miljenić Nikola (1998)SC Medveščak, Croatia | 49.95 | - | 825 | |
50m24.03 R:0.66 100m49.9525.92 -
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| 2 | 3 | Márton Richárd (1999)Budapesti Honvéd SE | 50.21 | 00.26 | 812 | |
50m23.93 R:0.61 100m50.2126.28 -
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| 3 | 7 | Alexander Trampitsch (1999)Österreichischer Swhwimmverband (AUT) | 50.25 | 00.30 | 810 | |
50m24.57 R:0.66 100m50.2525.68 -
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| 4 | 5 | Simon Bucher (2000)Österreichischer Swhwimmverband (AUT) | 50.54 | 00.59 | 797 | |
50m24.53 R:0.62 100m50.5426.01 -
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| 5 | 6 | Leon Opatril (2003)Österreichischer Swhwimmverband (AUT) | 50.73 | 00.78 | 788 | |
50m24.16 R:0.65 100m50.7326.57 -
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| 6 | 8 | Harsányi Mátyás (2005)BVSC-Zugló | 50.74 | 00.79 | 787 | |
50m24.27 R:0.73 100m50.7426.47 -
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| 7 | 1 | Paut Karlo Noah (2000)PK IGRA | 50.79 | 00.84 | 785 | |
50m23.91 R:0.63 100m50.7926.88 -
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| 8 | 4 | Doueihy Simon (2002)Lebanese National Federation | 50.86 | 00.91 | 782 | |
50m24.29 R:0.65 100m50.8626.57 -
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