| Host City | Firenze |
|---|---|
| Country | |
| Held | 27 – 30 July 1978 |
| Competitors | 11 |
| Countries | 3 |
Held jointly with the 1978 European Junior Swimming Championships.
| Event | Gender | Held | Status | Competitors | Countries |
|---|---|---|---|---|---|
| 3 m Springboard | Men | — | Medal | 3 | 2 |
| 10 m Platform | Men | — | Medal | 3 | 2 |
| 3 m Springboard | Women | — | Medal | 3 | 2 |
| 10 m Platform | Women | — | Medal | 3 | 2 |
| Pos | Country | 🥇 Gold | 🥈 Silver | 🥉 Bronze | Total | |
|---|---|---|---|---|---|---|
| 1 | East Germany | 2 | 1 | 3 | 6 | |
| 2 | Soviet Union | 1 | 2 | 1 | 4 | |
| 3 | Italy | 1 | 1 | 0 | 2 | |