- Traditional Chinese Character(HanT):
O
- Simplified Chinese Character(HanS):
O
- Bopomofo(Mandarin Phonetic Symbols): ㄡ (ㄡ)
- Bopomofo(Zhuyin Keyboard Input/IME): ". " (.)
- 「O」的注音符號/「O」怎麼發音怎麼唸: ㄡ
- (ASCII) Hanyu Pinyin: "ou" "Ou1" "Ou1" (O)
- (Latin) Hànyǔ Pīnyīn: [ ]
- (英文翻譯) English Translation: "O"
- (西語翻譯) Traducción Español: "O"
- (日文翻譯) 日本語翻訳: "O"