1155
| Years | 
|---|
| Millennium | 
| 2nd millennium | 
| Centuries | 
| Decades | 
| Years | 
| 1155 by topic | 
|---|
| Leaders | 
| 
 | 
| Birth and death categories | 
| Births – Deaths | 
| Establishments and disestablishments categories | 
| Establishments – Disestablishments | 
| Art and literature | 
| 1155 in poetry | 
| Gregorian calendar | 1155 MCLV | 
| Ab urbe condita | 1908 | 
| Armenian calendar | 604 ԹՎ ՈԴ | 
| Assyrian calendar | 5905 | 
| Balinese saka calendar | 1076–1077 | 
| Bengali calendar | 561–562 | 
| Berber calendar | 2105 | 
| English Regnal year | 1 Hen. 2 – 2 Hen. 2 | 
| Buddhist calendar | 1699 | 
| Burmese calendar | 517 | 
| Byzantine calendar | 6663–6664 | 
| Chinese calendar | 甲戌年 (Wood Dog) 3852 or 3645 — to — 乙亥年 (Wood Pig) 3853 or 3646 | 
| Coptic calendar | 871–872 | 
| Discordian calendar | 2321 | 
| Ethiopian calendar | 1147–1148 | 
| Hebrew calendar | 4915–4916 | 
| Hindu calendars | |
| - Vikram Samvat | 1211–1212 | 
| - Shaka Samvat | 1076–1077 | 
| - Kali Yuga | 4255–4256 | 
| Holocene calendar | 11155 | 
| Igbo calendar | 155–156 | 
| Iranian calendar | 533–534 | 
| Islamic calendar | 549–550 | 
| Japanese calendar | Kyūju 2 (久寿2年) | 
| Javanese calendar | 1061–1062 | 
| Julian calendar | 1155 MCLV | 
| Korean calendar | 3488 | 
| Minguo calendar | 757 before ROC 民前757年 | 
| Nanakshahi calendar | −313 | 
| Seleucid era | 1466/1467 AG | 
| Thai solar calendar | 1697–1698 | 
| Tibetan calendar | 阳木狗年 (male Wood-Dog) 1281 or 900 or 128 — to — 阴木猪年 (female Wood-Pig) 1282 or 901 or 129 | 
Year 1155 (MCLV) was a common year starting on Saturday of the Julian calendar.