1098
| Years | 
|---|
| Millennium | 
| 2nd millennium | 
| Centuries | 
| Decades | 
| Years | 
| 1098 by topic | 
|---|
| Leaders | 
| 
 | 
| Birth and death categories | 
| Births – Deaths | 
| Establishments and disestablishments categories | 
| Establishments – Disestablishments | 
| Gregorian calendar | 1098 MXCVIII | 
| Ab urbe condita | 1851 | 
| Armenian calendar | 547 ԹՎ ՇԽԷ | 
| Assyrian calendar | 5848 | 
| Balinese saka calendar | 1019–1020 | 
| Bengali calendar | 504–505 | 
| Berber calendar | 2048 | 
| English Regnal year | 11 Will. 2 – 12 Will. 2 | 
| Buddhist calendar | 1642 | 
| Burmese calendar | 460 | 
| Byzantine calendar | 6606–6607 | 
| Chinese calendar | 丁丑年 (Fire Ox) 3795 or 3588 — to — 戊寅年 (Earth Tiger) 3796 or 3589 | 
| Coptic calendar | 814–815 | 
| Discordian calendar | 2264 | 
| Ethiopian calendar | 1090–1091 | 
| Hebrew calendar | 4858–4859 | 
| Hindu calendars | |
| - Vikram Samvat | 1154–1155 | 
| - Shaka Samvat | 1019–1020 | 
| - Kali Yuga | 4198–4199 | 
| Holocene calendar | 11098 | 
| Igbo calendar | 98–99 | 
| Iranian calendar | 476–477 | 
| Islamic calendar | 491–492 | 
| Japanese calendar | Jōtoku 2 (承徳2年) | 
| Javanese calendar | 1002–1003 | 
| Julian calendar | 1098 MXCVIII | 
| Korean calendar | 3431 | 
| Minguo calendar | 814 before ROC 民前814年 | 
| Nanakshahi calendar | −370 | 
| Seleucid era | 1409/1410 AG | 
| Thai solar calendar | 1640–1641 | 
| Tibetan calendar | 阴火牛年 (female Fire-Ox) 1224 or 843 or 71 — to — 阳土虎年 (male Earth-Tiger) 1225 or 844 or 72 | 
Year 1098 (MXCVIII) was a common year starting on Friday of the Julian calendar.