The 1954 LEN European Aquatics Championships were held 31 August – 5 September in Turin, Italy. In swimming, butterfly events were contested for the first time; 100 m for women and 200 m for men.
| 3 m springboard | Roman Brener | 153.26 | Gennadiy Udalov | 141.16 | Christian Pire | 136.97 | |
| 10 m platform | Roman Brener | 144.01 | Mikhail Chachba | 142.06 | Peter Heatly | 133.59 |
| 3 m springboard | Valentina Chumicheva | 129.45 | Birte Christoffersen-Hanson | 127.79 | Lyubov Zhigalova | 125.30 | |
| 10 m platform | Tatyana Karakashyants | 79.86 | Birte Christoffersen-Hanson | 72.17 | Eva Pfarrhofer | 65.68 |
| 100 m freestyle | Imre Nyéki Hungary | 57.8 | Lev Balandin | 58.2 | Géza Kádas Hungary | 58.3 | |
| 400 m freestyle | György Csordás Hungary | 4:38.8 | Angelo Romani | 4:40.4 | Per-Olof Östrand | 4:40.9 | |
| 1500 m freestyle | György Csordás Hungary | 18:57.8 | György Schuszter Hungary | 19:05.6 | Vladimir Lavrinenko | 19:10.6 | |
| 100 m backstroke | Gilbert Bozon | 1:05.1 | László Magyar Hungary | 1:05.3 | John Brockway | 1:05.9 | |
| 200 m breaststroke | Klaus Bodinger | 2:40.9 | Marek Petrusewicz | 2:42.5 | Sándor Utassy Hungary | 2:43.8 | |
| 200 m butterfly | György Tumpek Hungary | 2:32.2 | Zsolt Feyér Hungary | 2:35.1 | Vadim Martinchik | 2:36.3 | |
| freestyle relay | Laszlo Till Zoltán Dömötör Géza Kádas Imre Nyéki | 8:47.8 | Jean Boiteux Gilbert Bozon Guy Montserret Aldo Eminente | 8:54.1 | Nikolay Suhorukov Vyacheslav Kurennoy Yuriy Abovyan Lev Balandin | 8:55.9 |
| 100 m freestyle | Katalin Szőke Hungary | 1:05.8 | Judit Temes Hungary | 1:06.7 | Geertje Wielema | 1:07.3 | |
| 400 m freestyle | Agata Sebö Hungary | 5:14.4 | Valéria Gyenge Hungary | 5:16.3 | Eša Ligorio | 5:18.7 | |
| 100 m backstroke | Geertje Wielema | 1:13.2 | Joke de Korte | 1:13.6 | Pat Symons | 1:17.3 | |
| 200 m breaststroke | Ursula Happe | 2:54.9 | Jytte Hansen | 2:55.0 | Klara Killerman Hungary | 2:55.8 | |
| 100 m butterfly | Jutta Langenau | 1:16.6 | Maria Littomeritzky Hungary | 1:18.6 | Ursula Happe | 1:18.9 | |
| freestyle relay | Valéria Gyenge Agata Sebö Judit Temes Katalin Szőke | 4:30.6 | Loes Zandvliet Joke de Korte Hetty Balkenende Geertje Wielema | 4:33.2 | Käthe Jansen Gisela von Netz Birgit Klomp Elisabeth Rechlin | 4:37.2 |
| Men's tournament |