Oyamada (written: 小山田 lit. "hill field") is a Japanese surname. Notable people with the surname include:

See also

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  • Oyamada Station (小山田駅, Oyamada-eki), train station in Hanamaki, Iwate Prefecture, Japan
  • Ōyamada, Mie (大山田村, Ōyamada-mura) former village in Ayama District, Mie Prefecture, Japan
  • Koyamada (小山田), Japanese surname using the same kanji