891
| Years: 887 888 889 890 - 891 - 892 893 894 895 | |
| Decades: 860s 870s 880s - 890s - 900s 910s 920s | |
| Centuries: 8th century - 9th century - 10th century | |
Events
- October 6 - Election of Pope Formosus
- Arnulf of Carinthia defeats the Normans at the Battle of Leuven
Deaths
- Fujiwara no Mototsune, Japanese regent
- Pope Stephen VI
- Photius, former Patriarch of Constantinople