| Iran | |
| Gender: | men |
| Type: | U21 |
| Federation: | IRIVF |
| Website: | iranvolleyball.com |
| Confederation: | AVC |
| Coach: | Gholamreza Momeni-Moghaddam |
| World Champs Apps: | 14 |
| World Champs First: | 1993 |
| World Champs Best: | (2019, 2023) |
| Regional Name: | Asian U20 Championship |
| Regional Cup Apps: | 17 |
| Regional Cup First: | 1988 |
| Regional Cup Best: | (1998, 2002, 2006, 2008, 2014, 2018, 2022, 2024) |
| Pattern B1: | _whitethinlines |
| Leftarm1: | 9D2933 |
| Body1: | DD0000 |
| Rightarm1: | 9D2933 |
| Shorts1: | DD0000 |
| Pattern B2: | _whitethinlines |
| Leftarm2: | 001C3D |
| Body2: | 002366 |
| Rightarm2: | 001C3D |
| Shorts2: | 001C3D |
| Pattern B3: | _bluestriped_sides |
| Leftarm3: | FFFFFF |
| Body3: | FFFFFF |
| Rightarm3: | FFFFFF |
| Shorts3: | FFFFFF |
The Iran men's national under-21 volleyball team represents Iran in men's under-21 volleyball Events, it is controlled and managed by the Islamic Republic of Iran Volleyball Federation (I.R.I.V.F.) and takes part in international volleyball competitions.
Champions Runners-up 3rd place 4th place
| FIVB U21 World Championship[1] | ||||||||
|---|---|---|---|---|---|---|---|---|
| Year | Position | Squad | ||||||
 1977 | Did not enter or Did not Qualify | – | – | – | – | – | Squad | |
 1981 | – | – | – | – | – | Squad | ||
 1985 | – | – | – | – | – | Squad | ||
 1987 | – | – | – | – | – | Squad | ||
| 1989 | – | – | – | – | – | Squad | ||
 1991 | – | – | – | – | – | Squad | ||
 1993 | 9th place | 6 | 1 | 5 | 6 | 17 | Squad | |
| 1995 | Did not Qualify | – | – | – | – | – | Squad | |
| 1997 | 9th place | 4 | 1 | 3 | 3 | 10 | Squad | |
 1999 | 8th place | 7 | 2 | 5 | 9 | 16 | Squad | |
 2001 | Did not Qualify | – | – | – | – | – | Squad | |
| 2003 | 6th place | 7 | 4 | 3 | 13 | 13 | Squad | |
 2005 | 5th place | 7 | 4 | 3 | 17 | 12 | Squad | |
 2007 | 3rd place | 7 | 5 | 2 | 18 | 10 | Squad | |
| 2009 | 7th place | 8 | 5 | 3 | 15 | 14 | Squad | |
| 2011 | 6th place | 8 | 4 | 4 | 17 | 13 | Squad | |
 2013 | 5th place | 8 | 7 | 1 | 21 | 5 | Squad | |
 2015 | 12th place | 8 | 3 | 5 | 15 | 17 | Squad | |
 2017 | 5th place | 8 | 6 | 2 | 22 | 14 | Squad | |
| 2019 | Champions | 8 | 6 | 2 | 21 | 9 | Squad | |
| 2021 | 9th place | 8 | 6 | 2 | 22 | 8 | Squad | |
| 2023 | Champions | 8 | 8 | 0 | 24 | 7 | Squad | |
| Total | 14/22 | 102 | 62 | 40 | 223 | 163 | - | |