Ota can refer to

• the ward of Ōta in Tokyo
• the city of Ota, Nigeria in Nigeria
• the city of Ōta in Gunma prefecture of Japan.
• the commune in the Corse-du-Sud département of France on the island of Corsica, Ota .
• the Japanese family name Ōta (太田)
  • Fusae Ota

The three-letter abbreviation OTA is usually used for the term "over-the-air." See

• Over The Air Programmable
• Terrestrial television
• Terrestrial radio