The Welsh records in swimming are ratified by Wales' governing body in swimming, Swim Wales. Records can be set in long course (50 metres) or short course (25 metres) swimming pools, with records currently recorded in the following events for both men and women. Freestyle: 50 m, 100 m, 200 m, 400 m, 800 m, 1500 m Backstroke: 50 m, 100 m, 200 m Breaststroke: 50 m, 100 m, 200 m Butterfly: 50 m, 100 m, 200 m Individual medley: 200 m, 400 m Relays: 4 × 100 m freestyle, 4 × 200 m freestyle, 4 × 100 m medley Mixed relays: 4 × 100 m freestyle (long course only), 4 × 100 m medley (long course only) The relay records displayed here are the official national relay records. However, Swim Wales maintains a separate set of national relay records for club teams, which are not shown here. Records can also be set at intermediate distances in an individual race and for the first leg of a relay race.

The ratification process involves the swimmer submitting an application to Swim Wales, providing details such as the swimmer's name(s), time swum, date and location of the swim, names of officials, and the swimsuit model worn. Once ratified, the records appear on the official records listing. Records that have not yet been fully ratified are marked with a '#' symbol in these lists, and all records were achieved in finals unless otherwise noted.

Freestyler and butterfly swimmer Matt Richards holds the most Welsh records with eight individual and thirteen in total. He is followed by Chloé Tutton with ten records to her name and Theodora Taylor and Jazmin Carlin who both currently hold seven Welsh records each, .

Welsh swimming records have been set in a total of 82 events. Welsh records have not been recorded in the mixed 4 × 200 m freestyle relay long course event, the men's and women's 100 m individual medley short course events, the men's, women's and mixed 4 × 50 m freestyle and medley relay short course events and the mixed 4 × 100 m medley relay short course event.

Currently there are no Welsh records that are also world, European or Commonwealth records however there are currently eight British records with Richards, Carlin and David Davies holding two each with one each by Jemma Lowe and Tyler Melbourne-Smith.

Five records still stand that were set by swimmers wearing bodysuits or suits made of polyurethane or other non-textile materials permitted between February 2008 until December 2009. On the eve of the 2009 World Aquatics Championships in Rome, FINA voted to ban the use of bodysuits and all suits made of non-textile materials starting 1 January 2010.

The oldest Welsh swimming record that still stands is the 4 × 100 m freestyle relay long course relay record of 3:26.48 set by the City of Cardiff swim team at the 1992 ASA National Winter Championships.

Long course (50 m) Men

|+ List of Welsh men's long course swimming records

Women

|+ List of Welsh women's long course swimming records

Mixed relay

|+ List of Welsh mixed long course swimming records

Short course (25 m) Men

|+ List of Welsh men's short course swimming records

Women

|+ List of Welsh women's short course swimming records

Multiple record holders

By athlete (men) + List of multiple male Welsh swimming record holders Recordcount Name(last record) Events 13 Matt Richards(2025) 50 m freestyle LC100 m freestyle LC200 m freestyle LC4 × 100 m freestyle relay LC4 × 200 m freestyle relay LC4 × 100 m medley relay LCMixed 4 × 100 m freestyle relay LCMixed 4 × 100 m medley relay LC50 m freestyle SC100 m freestyle SC200 m freestyle SC50 m butterfly SC100 m butterfly SC 6 Marco Loughran(2013) 50 m backstroke LC100 m backstroke LC200 m backstroke LC50 m backstroke SC100 m backstroke SC200 m backstroke SC 5 Lewis Fraser(2026) 50 m butterfly LC100 m butterfly LC4 × 100 m medley relay LC50 m butterfly SC100 m butterfly SC 3 David Davies(2009) 400 m freestyle LC800 m freestyle LC1500 m freestyle LC Kyle Booth(2026) 50 m breaststroke LC4 × 100 m medley relay LCMixed 4 × 100 m medley relay LC Robert Holderness(2015) 100 m breaststroke LC200 m breaststroke LC200 m breaststroke SC Ieuan Lloyd(2014) 200 m individual medley LC200 m individual medley SC4 × 200 m freestyle relay SC Dan Jones(2022) 4 × 100 m freestyle relay LC4 × 200 m freestyle relay LCMixed 4 × 100 m freestyle relay LC 2 Thomas Haffield(2009) 400 m individual medley LC400 m individual medley SC Calum Jarvis(2022) 4 × 100 m freestyle relay LC4 × 200 m freestyle relay LC Tyler Melbourne-Smith(2025) 400 m freestyle SC800 m freestyle SC

By athlete (women) + List of multiple female Welsh swimming record holders Recordcount Name(last record) Events 10 Chloé Tutton(2018) 100 m breaststroke LC200 m breaststroke LC4 × 200 m freestyle relay LC4 × 100 m medley relay LC50 m breaststroke SC100 m breaststroke SC200 m breaststroke SC4 × 100 m freestyle relay SC4 × 200 m freestyle relay SC4 × 100 m medley relay SC 7 Theodora Taylor(2026) 50 m freestyle LC100 m freestyle LC200 m individual medley LC4 × 100 m freestyle relay LC50 m freestyle SC100 m freestyle SC200 m individual medley SC Jazmin Carlin(2018) 200 m freestyle LC400 m freestyle LC800 m freestyle LC1500 m freestyle LC4 × 200 m freestyle relay LC400 m freestyle SC800 m freestyle SC 6 Medi Harris(2026) 100 m backstroke LC200 m backstroke LC4 × 100 m freestyle relay LCMixed 4 × 100 m freestyle relay LCMixed 4 × 100 m medley relay LC200 m backstroke SC 4 Georgia Davies(2023) 50 m backstroke LC4 × 100 m medley relay LC50 m backstroke SC100 m backstroke SC Jemma Lowe(2013) 100 m butterfly LC200 m butterfly LC100 m butterfly SC200 m butterfly SC 3 Kathryn Greenslade(2018) 4 × 200 m freestyle relay LC4 × 100 m medley relay LC200 m freestyle SC Ellena Jones(2018) 4 × 200 m freestyle relay LC4 × 100 m freestyle relay SC4 × 200 m freestyle relay SC Siwan Thomas-Howells(2011) 4 × 100 m freestyle relay SC4 × 200 m freestyle relay SC4 × 100 m medley relay SC 2 Harriet Jones(2022) 50 m butterfly LCMixed 4 × 100 m medley relay LC Sian Morgan(2014) 4 × 100 m freestyle relay SC4 × 200 m freestyle relay SC

References General Welsh Long Course records 30 July 2026 updated Welsh Short Course records 15 December 2025 updated Specific

External links Wales Swimming official website Wales Swimming records subpage