Otaki or Ōtaki may refer to:
Places
- Ōtaki, New Zealand
- Ōtaki (New Zealand electorate)
- Ōtaki River, New Zealand
- Ōtaki, Chiba, Japan
- Ōtaki, Saitama, Japan
- Ōtaki, Hokkaido, Japan
- Ōtaki, Nagano, Japan
- Otaki, California, U.S.
Surname
- , Japanese football player
- , Japanese hockey player
- , Japanese rock musician
- , Japanese photojournalist
- , Japanese actor
- , Japanese voice actor
- , Japanese racing driver
- , Japanese pop singer
- , Japanese former member of the NGT48
Other uses
- List of ships named Otaki
- "Otaki", a 1970 single by The Fourmyula