1434
| Years | 
|---|
| Millennium | 
| 2nd millennium | 
| Centuries | 
| Decades | 
| Years | 
| 1434 by topic | 
|---|
| Arts and science | 
| Leaders | 
| 
 | 
| Birth and death categories | 
| Births – Deaths | 
| Establishments and disestablishments categories | 
| Establishments – Disestablishments | 
| Art and literature | 
| 1434 in poetry | 
| Gregorian calendar | 1434 MCDXXXIV | 
| Ab urbe condita | 2187 | 
| Armenian calendar | 883 ԹՎ ՊՁԳ | 
| Assyrian calendar | 6184 | 
| Balinese saka calendar | 1355–1356 | 
| Bengali calendar | 840–841 | 
| Berber calendar | 2384 | 
| English Regnal year | 12 Hen. 6 – 13 Hen. 6 | 
| Buddhist calendar | 1978 | 
| Burmese calendar | 796 | 
| Byzantine calendar | 6942–6943 | 
| Chinese calendar | 癸丑年 (Water Ox) 4131 or 3924 — to — 甲寅年 (Wood Tiger) 4132 or 3925 | 
| Coptic calendar | 1150–1151 | 
| Discordian calendar | 2600 | 
| Ethiopian calendar | 1426–1427 | 
| Hebrew calendar | 5194–5195 | 
| Hindu calendars | |
| - Vikram Samvat | 1490–1491 | 
| - Shaka Samvat | 1355–1356 | 
| - Kali Yuga | 4534–4535 | 
| Holocene calendar | 11434 | 
| Igbo calendar | 434–435 | 
| Iranian calendar | 812–813 | 
| Islamic calendar | 837–838 | 
| Japanese calendar | Eikyō 6 (永享6年) | 
| Javanese calendar | 1349–1350 | 
| Julian calendar | 1434 MCDXXXIV | 
| Korean calendar | 3767 | 
| Minguo calendar | 478 before ROC 民前478年 | 
| Nanakshahi calendar | −34 | 
| Thai solar calendar | 1976–1977 | 
| Tibetan calendar | 阴水牛年 (female Water-Ox) 1560 or 1179 or 407 — to — 阳木虎年 (male Wood-Tiger) 1561 or 1180 or 408 | 
Year 1434 (MCDXXXIV) was a common year starting on Friday of the Julian calendar.