| Name | labels | source | status | parallel or principal name | code | country | adm1 | adm2 | adm3 |
| Irkutsk / Иркутск |
ru | P | a21, p10 | RU | IRK | ||||
| Irkutsk |
ruR | Klnr1824_V:14; Gi1849:94; Keo1854:91; MKR1859:03; Ja1868:44; VÕS1933; ÕS1960 | VAR | Irkutsk / Иркутск | a21, p10 | RU | IRK | ||
| Erhüü / Эрхүү |
bua, mn | bua1954s#; mn1957s | VAR | Irkutsk / Иркутск | a21, p10 | RU | IRK | ||
| Erkeü / ᠡᠷᠬᠡᠦ |
cmg | MN1990k | VAR | Irkutsk / Иркутск | a21, p10 | RU | IRK | ||
| Irkoutsk |
fr TR | fr1995s | VAR | Irkutsk / Иркутск | a21, p10 | RU | IRK | ||
| Irkutskas |
lt TR | lit1969s | VAR | Irkutsk / Иркутск | a21, p10 | RU | IRK | ||
| Irkutska |
lv TR | lav1966s | VAR | Irkutsk / Иркутск | a21, p10 | RU | IRK | ||
| Irkoetsk |
nl TR | nl2002n | VAR | Irkutsk / Иркутск | a21, p10 | RU | IRK | ||
| Irkuck |
pl | pl1996n | VAR | Irkutsk / Иркутск | a21, p10 | RU | IRK | ||
| Örket / Өркет |
tt OBS | tt1997s | VAR | Irkutsk / Иркутск | a21, p10 | RU | IRK | ||
| Yierkucike / 伊尔库次克 |
zh | zh1977s | VAR | Irkutsk / Иркутск | a21, p10 | RU | IRK |