1128
| Years | 
|---|
| Millennium | 
| 2nd millennium | 
| Centuries | 
| Decades | 
| Years | 
| 1128 by topic | 
|---|
| Leaders | 
| 
 | 
| Birth and death categories | 
| Births – Deaths | 
| Establishments and disestablishments categories | 
| Establishments – Disestablishments | 
| Art and literature | 
| 1128 in poetry | 
| Gregorian calendar | 1128 MCXXVIII | 
| Ab urbe condita | 1881 | 
| Armenian calendar | 577 ԹՎ ՇՀԷ | 
| Assyrian calendar | 5878 | 
| Balinese saka calendar | 1049–1050 | 
| Bengali calendar | 534–535 | 
| Berber calendar | 2078 | 
| English Regnal year | 28 Hen. 1 – 29 Hen. 1 | 
| Buddhist calendar | 1672 | 
| Burmese calendar | 490 | 
| Byzantine calendar | 6636–6637 | 
| Chinese calendar | 丁未年 (Fire Goat) 3825 or 3618 — to — 戊申年 (Earth Monkey) 3826 or 3619 | 
| Coptic calendar | 844–845 | 
| Discordian calendar | 2294 | 
| Ethiopian calendar | 1120–1121 | 
| Hebrew calendar | 4888–4889 | 
| Hindu calendars | |
| - Vikram Samvat | 1184–1185 | 
| - Shaka Samvat | 1049–1050 | 
| - Kali Yuga | 4228–4229 | 
| Holocene calendar | 11128 | 
| Igbo calendar | 128–129 | 
| Iranian calendar | 506–507 | 
| Islamic calendar | 521–523 | 
| Japanese calendar | Daiji 3 (大治3年) | 
| Javanese calendar | 1033–1034 | 
| Julian calendar | 1128 MCXXVIII | 
| Korean calendar | 3461 | 
| Minguo calendar | 784 before ROC 民前784年 | 
| Nanakshahi calendar | −340 | 
| Seleucid era | 1439/1440 AG | 
| Thai solar calendar | 1670–1671 | 
| Tibetan calendar | 阴火羊年 (female Fire-Goat) 1254 or 873 or 101 — to — 阳土猴年 (male Earth-Monkey) 1255 or 874 or 102 | 
Year 1128 (MCXXVIII) was a leap year starting on Sunday of the Julian calendar.