Open/Male - Short Course - 100m Individual Medley - Aberystwyth and District Swimmin - All Time - Open Age Group
| Rank | Name | Ranked Club | YoB | Meet | Date | Time |
|---|---|---|---|---|---|---|
| 1 | Sam Middleton | Aberystwyth | 89 | Llanelli Open Meet 2004, Llanelli | 13/03/04 | 1:05.12 |
| 2 | James Payne | Aberystwyth | 01 | Swim Conwy Whitsun Meet, Llandudno | 27/05/17 | 1:05.67 |
| 3 | Sion Owen | Aberystwyth | 94 | Llanelli Autumn Meet 2011, Llanelli | 01/10/11 | 1:06.08 |
| 4 | Shaun Timothy Lewis | Aberystwyth | 91 | Torfaen Sprint Meet, Newport | 05/07/08 | 1:06.37 |
| 5 | Cameron Phillips | Aberystwyth | 00 | British Gas Swim Wales Open Winter Championships, Swansea | 21/12/14 | 1:07.96 |
| 6 | James Raw | Leic Sharks | 07 | May Marker Meet, Ellesmere | 23/05/21 | 1:08.66 |
| 7 | Joseph Gorman | Aberystwyth | 04 | Shrewsbury ASC Autumn Sprint Open Meet 2021, Wolverhampton | 06/11/21 | 1:09.76 |
| 8 | Isaac Williamson-Evans | Aberystwyth | 97 | Swim Conway Whitsun Meet, Llandudno | 25/05/13 | 1:10.14 |
| 9 | Steffan Herdman | Aberystwyth | 99 | City of Birmingham 22nd Open Meet, Stechford | 04/04/15 | 1:11.65 |
| 10 | Teilo Courtier-Lilley | Aberystwyth | 99 | Swim Conway Whitsun Meet, Llandudno | 25/05/13 | 1:12.58 |
| 11 | Tomos Watson | Aberystwyth | 97 | Llanelli Autumn Meet 2011, Llanelli | 01/10/11 | 1:13.10 |
| 12 | Morgan Evans | Aberystwyth | 01 | Swim Conwy Whitsun Meet, Llandudno | 28/05/16 | 1:13.54 |
| 13 | Jude Coleridge | Aberystwyth | 04 | Shrewsbury ASC Autumn Open Meet, Wolverhampton | 06/10/18 | 1:14.76 |
| 14 | Jacob Massey | Aberystwyth | 03 | Amman Valley Open Meet 2018, Carmarthen | 06/05/18 | 1:17.18 |
| 15 | Benjamin Jones | Aberystwyth | 96 | Torfaen Sprint Meet, Newport | 05/07/08 | 1:17.22 |
| 16 | Dion Parry | Aberystwyth | 94 | Llanelli Autumn Meet, Llanelli | 03/10/09 | 1:21.46 |
| 17 | Jamie Owen | Aberystwyth | 95 | Llanelli Autumn Meet, Llanelli | 03/10/09 | 1:22.07 |
| 18 | Ivan Rukov | Aberystwyth | 07 | Shrewsbury ASC Spring Open Meet 2022, Wolverhampton | 02/04/22 | 1:23.43 |
| 19 | Sion Davies | Aberystwyth | 00 | Amman Valley Open Meet 2012, Llanelli | 09/06/12 | 1:25.00 |
| 20 | Maxwell Glasser | Aberystwyth | 98 | City of Bangor Diddy Meet, Bangor | 14/04/12 | 1:25.82 |
| 21 | Joshua Nathanie Harries | Aberystwyth | 92 | Swim Swansea Junior Open Meet, Swansea | 07/06/02 | 1:27.59 |
| 22 | James Michael | Aberystwyth | 00 | Cath Ankers Meet, Wrexham | 09/06/12 | 1:28.21 |
| 23 | Aaron Jones | Aberystwyth | 07 | Holywell ASC Summer Sprint 2023, Holywell | 02/07/23 | 1:29.64 |
| 24 | Joshua Tudor | Aberystwyth | 04 | Wrexham Junior Sprint Meet, Wrexham | 23/11/14 | 1:29.80 |
| 25 | Ioan Mabbutt | Aberystwyth | 06 | Amman Valley Open Meet 2019, Carmarthen | 05/05/19 | 1:30.70 |
 |  |
