| 1981 World Junior Men's Water Polo Championships |
Milano, Bergamo, and Como |
 ITA |
14 – 21 September 1981 |
1 |
39 |
15 |
| 1983 World Junior Men's Water Polo Championships |
Barcelona |
 ESP |
29 July – 6 August 1983 |
1 |
38 |
13 |
| 1985 World Junior Men's Water Polo Championships |
İstanbul |
 TUR |
17 – 25 August 1985 |
1 |
13 |
12 |
| 1987 World Junior Men's Water Polo Championships |
São Paulo |
 BRA |
6 – 13 September 1987 |
1 |
12 |
13 |
| 1989 World Junior Men's Water Polo Championships |
Narbonne |
 FRA |
30 July – 7 August 1989 |
1 |
0 |
0 |
| 1991 World Junior Men's Water Polo Championships |
Irvine, California |
 USA |
31 August – 8 September 1991 |
1 |
41 |
16 |
| 1993 World Junior Men's Water Polo Championships |
Al-Qahira |
 EGY |
21 – 29 August 1993 |
1 |
39 |
16 |
| 1995 World Junior Men's Water Polo Championships |
Dunkerque |
FRA |
21 – 30 July 1995 |
1 |
39 |
21 |
| 1997 World Junior Men's Water Polo Championships |
La Habana |
 CUB |
15 – 24 July 1997 |
1 |
13 |
24 |
| 1999 World Junior Men's Water Polo Championships |
Madinat al-Kuwait |
 KUW |
9 – 18 October 1999 |
1 |
27 |
23 |
| 2001 World Junior Men's Water Polo Championships |
İstanbul |
TUR |
10 – 19 August 2001 |
1 |
37 |
23 |
| 2003 World Junior Men's Water Polo Championships |
Napoli |
ITA |
9 – 17 August 2003 |
1 |
37 |
20 |
| 2005 World Junior Men's Water Polo Championships |
Mar del Plata |
 ARG |
6 – 15 October 2005 |
1 |
39 |
21 |
| 2007 World Junior Men's Water Polo Championships |
Long Beach, California |
USA |
18 – 26 August 2007 |
1 |
39 |
24 |
| 2009 World Junior Men's Water Polo Championships |
Šibenik |
 CRO |
22 – 30 August 2009 |
1 |
39 |
19 |
| 2011 World Junior Men's Water Polo Championships |
Volos |
 GRE |
27 August – 4 September 2011 |
1 |
39 |
20 |
| 2013 World Junior Men's Water Polo Championships |
Szombathely |
 HUN |
12 – 18 August 2013 |
1 |
39 |
16 |
| 2015 World Junior Men's Water Polo Championships |
Almaty |
 KAZ |
4 – 12 September 2015 |
1 |
33 |
18 |
| 2017 World Junior Men's Water Polo Championships |
Beograd |
 SRB |
5 – 13 August 2017 |
1 |
39 |
20 |
| 2019 World Junior Men's Water Polo Championships |
Madinat al-Kuwait |
KUW |
12 – 20 December 2019 |
1 |
39 |
20 |
| 2021 World Junior Men's Water Polo Championships |
Praha |
 CZE |
28 August – 5 September 2021 |
1 |
43 |
18 |
| 2023 World Junior Men's Water Polo Championships |
Otopeni and București |
 ROU |
10 – 17 June 2023 |
1 |
45 |
19 |
| 2025 World Junior Men's Water Polo Championships |
Zagreb |
CRO |
14 – 21 June 2025 |
1 |
44 |
3 |
SCG
URS
YUG
AUS
MNE
SVK