Otaki is the name of several places in Japan and New Zealand.

• In Japan:
  • Otaki is a town in Chiba Prefecture
  • Otaki is a village in Hokkaido Prefecture
  • Otaki is a village in Nagano Prefecture
  • Otaki is a village in Saitama Prefecture

• In New Zealand:
  • Otaki is a town in the southern North Island
  • The Otaki River is also in the southern North Island

• Otaki was a Japanese firm that produced plastic scale model kits.