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Iwakuni Air Base

United States Marine Corps and Japan Maritime Self-Defense Force air base in Yamaguchi, Japan
Place Air Base Q1030389
Iwakuni Air Base
U.S. Navy photo by Petty Officer 1st Class Ryre Arciaga · Public Domain · Wikimedia

Facts

17 properties

Identity

Instance of
air base, airport, commercial traffic aerodrome[5][6]
Official website
www.mcasiwakuni.marines.mil[15]

Location

Country
Japan[3]
Coordinate location
🗺️ 34.145°, 132.244°[14]
Located in or next to body of water
Hiroshima Bay[4]
Located in the administrative territorial entity
Iwakuni[2]

Population and size

Elevation above sea level
+10[20]
⚖ sources disagree Wikidata 10 GeoNames 2 m edition 2026-09-26 · CC BY 4.0 ↗
More facts +10
Short name
岩国, Iwakuni[18][19]
Aerodrome reference point
🗺️ 34.144°, 132.236°[21]
Date of official opening
1940[17]
IATA airport code
IWK[7]
ICAO airport code
RJOI[8]
Occupant
Marine Aircraft Group 12, 31st Fleet Air Wing, 374th Airlift Wing[9][10][11]
Patronage
356k (0–520k, n=47)[22][23][24]
Place served by transport hub
Iwakuni[16]
Scheduled service destination
Tokyo International Airport, Naha Airport[12][13]
State of use
in use
🏷️ Also known as
en 岩　国 en Iwakuni Air Base en Iwakuni Airport en Iwakuni Kintaikyō Airport en IWK en Marine Corps Air Station Iwakuni en RJOI en 岩国 de RJOI fa پایگاه نیروی هوایی، دریایی ایواکونی fr IWK fr RJOI fr 岩国 fr 岩　国 it base aerea di Iwakuni ja 岩国基地 ja 岩国空港 ja 岩国航空基地 ja 岩国錦帯橋空港 ja 岩国飛行場
🔖 Identifiers · 9
Freebase ID
/m/037wzw
GeoLOD ID
Onao4s
GeoNLP ID (obsolete)
fyweEZ
GeoNames ID
6300377
Google Maps Customer ID
1001104158041115695
OpenStreetMap way ID
664900076
WIGOS station ID
0-20000-0-47764
WMO code
47764
Wolfram Language entity code
Entity["Airport", "RJOI"]

Report an error or request removal Lineage (PROV-JSON)

🔗 Connections
Instance of 2
airport, air base
Scheduled service destination 2
Tokyo International Airport, Naha Airport
Country 1
Japan
Located in or next to body of water 1
Hiroshima Bay
Located in the administrative territorial entity 1
Iwakuni
Place served by transport hub 1
Iwakuni
← Scheduled service destination 1
Tokyo International Airport
← Terminus 1
Japan National Route 189
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Summary

Iwakuni Air Base is an air base[1].

🛰️ Living Edge · news-derived, source-cited

high ≥ 0.90 · emerging ≥ 0.65 · low below — calibrated against hand-rated truth (single-source .44 · two-source .62 · production-typical .70), so a band is a measurement, not a promise. High is rare by design: it needs both a supported assertion and an evidence sentence. A confirmed or contradicted chip is a Wikidata cross-check; no chip means Wikidata has no value for that property — the ordinary case here, and it says nothing either way. A confirm-only note marks a property whose check can never disagree (Wikidata's border and capital data is not exhaustive), so silence there is a limit of the check, not of the claim.

served-tier precision 80.7% [76.2, 84.5] · rated rows currently served n=342 · entailment-gated at 0.85 · measured 2026-09-29 · re-scored every 10 min, demoted at the half-hourly fold

Located in the administrative territorial entity IWAKUNI emerging0.662 independent sources

evidence “MCAS Iwakuni operates a single runway shared by U.S.” stripes.com · read source

Related Entities

Japan

References

Programmatic citations — every numbered marker resolves to a verifiable graph row below.

Direct Wikidata claims

  1. [3] ↑ . wikidata.org.
  2. [5] ↑ . wikidata.org.
  3. [6] ↑ . wikidata.org.
  4. [2] ↑ . wikidata.org.
  5. [4] ↑ . wikidata.org.
  6. [7] ↑ . wikidata.org.
  7. [8] ↑ . wikidata.org.
  8. [9] ↑ . wikidata.org.
  9. [10] ↑ . wikidata.org.
  10. [11] ↑ . wikidata.org.
  11. [12] ↑ . wikidata.org.
  12. [13] ↑ . wikidata.org.
  13. [14] ↑ . wikidata.org.
  14. [15] ↑ . wikidata.org.
  15. [16] ↑ . wikidata.org.
  16. [17] ↑ . wikidata.org.
  17. [18] ↑ . wikidata.org.
  18. [19] ↑ . wikidata.org.
  19. [20] ↑ . wikidata.org.
  20. [21] ↑ . wikidata.org.
  21. [22] ↑ . wikidata.org.
  22. [23] ↑ . wikidata.org.
  23. [24] ↑ . wikidata.org.

Class ancestry

  1. [1] ↑ . Wikidata. wikidata.org.

📑 Cite this page

Use these citations when quoting this entity in research, articles, AI prompts, or wherever provenance matters. We aggregate Wikidata + Wikipedia + authoritative open-data sources; the stitched, scored, cross-referenced view is what 4ort.xyz contributes.

APA 4ort.xyz Knowledge Graph. (2026). Iwakuni Air Base. Retrieved November 8, 2026, from https://4ort.xyz/entity/iwakuni-air-base
MLA “Iwakuni Air Base.” 4ort.xyz Knowledge Graph, 4ort.xyz, 8 Nov. 2026, https://4ort.xyz/entity/iwakuni-air-base.
BibTeX @misc{4ortxyz_iwakuni-air-base_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{Iwakuni Air Base}}, year = {2026}, url = {https://4ort.xyz/entity/iwakuni-air-base}, note = {Accessed: 2026-11-08}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): Iwakuni Air Base — https://4ort.xyz/entity/iwakuni-air-base (retrieved 2026-11-08)

Canonical URL: https://4ort.xyz/entity/iwakuni-air-base · Last refreshed:

Edit History

Rolling log of changes to this entity's Wikidata record. Values shown reflect the current state of each edited property — follow the history link to see the precise diff for any edit.

  1. 7w ago · RVA2869 · 2026-09-20 view diff on Wikidata ↗
    Located in time zone → —
    "Changed the item: QuickStatements 3.0 batch #55346: redundant value, already present at higher administrative level"
  2. 12w ago · 2pattywhack27 · 2026-08-18 view diff on Wikidata ↗
    Image → CVW-5 Aircraft fly in Formation during MCAS Iwakuni Friendsh
    "Changed claim: Image: CVW-5 Aircraft fly in Formation during MCAS Iwakuni Friendship Day (9014066).jpg"
  3. 26w ago · Ikan · 2026-05-10 view diff on Wikidata ↗
    Wolfram Language entity code → Entity["Airport", "RJOI"]
    "Created claim: Wolfram Language entity code: Entity["Airport", "RJOI"], batch #257634"
Live feed via Wikidata EventStreams. New edits appear within minutes of being made on Wikidata.