Yamaguti-kōan (山口県 Yamaguchi-ken?)Ji̍t-pún Honsyû ê chi̍t-ê kōan, siú-hú sī Yamaguti-chhī.

Yamaguti-koān
山口県
—  koān  —
Yamaguti-koān ê kî-á
Kî-á
Official logo of Yamaguti-koān
Hui-chiong
Yamaguti-koān ê uī-tì
Yamaguti-koān ê uī-tì
Kok-ka Ji̍t-pún
Tē-hng Tyûgoku
Tó-sū Honsyû
Hú-siâⁿ Yamaguti
Bīn-chek
 - Lóng-chóng 6,112.30 km2
Jîn-kháu (2018)
 - Lóng-chóng 1,377,631 lâng
 - Bi̍t-tō͘ 225.4/km2
Bāng-chām www.pref.yamaguchi.lg.jp/foreign/english/index.html