ōyumi
Ja-Latn Ōyumi were ancient Japanese artillery pieces that first appeared in the seventh century (during the Asuka Period). It is unknown exactly what kind of weapon the Oyumi was or how it looked, as there are no surviving examples or illustrations, but the Oyumi is thought to have been a type of siege crossbow.
ōyumi

Deadkid dk · CC BY-SA 3.0
- Field
- crossbow
- Region
- Japan
In this article
History and use
According to Japanese records, the Oyumi was different from the hand held crossbow also in use during the same time period. A quote from a seventh-century source seems to suggest that the Oyumi may have able to fire multiple arrows at once: "the Oyumi were lined up and fired at random, the arrows fell like rain". A ninth century Japanese artisan named Shimaki no Fubito claimed to have improved on a version of the weapon used by the Chinese; his version could rotate and fire projectiles in multiple directions. The last recorded use of the Oyumi was in 1189.
Named by the record
Places
Only places the record itself states, plotted where the house gazetteer settles their coordinates. Nothing is inferred from a name or a nationality.
- Japan
Named but not plotted · 1
ōyumi is associated with Japan.
Country
Licensing
Text attribution
Part of the biographical narrative on this page reuses licensed material. Its origin, revision and licence are recorded here.
The biographical narrative on this page is based on the Wikipedia article Ōyumi, revision 1360864955 (EN edition), by its contributors. VALÉORINE has edited that text and built its own documentary record around it. The reused material is available under CC BY-SA 4.0, and this page's reuse of it is offered under the same licence. Everything else on this page — the chronology, the holdings, the evidence, the plates and the connections — is VALÉORINE's own record. Sources and licences.
Citations
References
Each reference names the institution holding it, so a reader may go to the document itself.
authority record
Unverified
Knowledge graph
Connections
Each connection was recorded deliberately, with the basis for it kept on the internal record.
Broader subject
1- crossbowTerminology
Established from a fact already recorded on a verified source.
The Encyclopedia exists whether or not anything is for sale. Corrections are recorded rather than overwritten, and every version of this record is kept. Published 16 August 2026.
Elsewhere in Militaria
6,095 published records in this field, each with its sources named.
- Ottoman matchlock musketTerminology
- OVP 1918Terminology
- Owen GunTerminology
- oxybelesTerminology
- OZM-4Terminology
- OZM-72Terminology
- P-120 MalakhitTerminology
- P-15 TermitTerminology
Best supported in this field
For owners
Own an object connected with ōyumi?
A specialist will read what you send and tell you what the house can establish, what it cannot, and whether the object is suited to sale. There is no charge and no obligation. The object stays with you throughout; nothing is shipped to us unless it is arranged in writing beforehand.