Yamauchi (山内町, Yamauchi-chō) was a town located in Kishima District, Saga Prefecture, Japan.

On March 1, 2006, Yamauchi, along with the town of Kitagata (also from Kishima District), was merged into the expanded city of Takeo.

• Mountains: Mt. Kurokami, Mt. Jinroku
• Rivers: Matsuura River (source)

• Saga Prefecture
  • Arita
  • Imari
  • Takeo
• Nagasaki Prefecture
  • Hasami

• April 1, 1889 - The modern municipality system was established. The area consisted of two villages: Nakato and Sumiyoshi.
• April 1, 1954 - Nakato and Sumiyoshi were merged to create Yamauchi Village.
• March 1, 1955 - Part of Takeuchi Town was incorporated into Yamauchi Village.
• September 1, 1960 - Yamauchi Village became Yamauchi Town (Yamauchi-machi)

• Yamauchi Junior High School
• Yamauchi Higashi Elementary School
• Yamauchi Nishi Elementary School

• JR Kyushu
  • Sasebo Line
    • Nagao Station - Mimasaka Station

• Expressways:
  • Nagasaki Expressway
    • Takeo-Kitagata Interchange
• National highways:
  • Route 35
• Prefectural roads:
  • Saga Prefectural Route 26 (Imari-Yamauchi)
  • Saga Prefectural Route 28 (Ōchi-Yamauchi)
  • Saga Prefectural Route 45 (Ureshino-Yamauchi)

• Mt. Kurokami, Fūfu Rock
• Kurokami no Roman festival
• Sangyō festival
• Chūō Park

• Sebastopol, California