Yo or YO or yo may stand for:

Look up yo in Wiktionary, the free dictionary.

• yo, an interjection in English
• Yo (cyrillic) (Ё, ё), a letter of the Cyrillic alphabet
• The pronoun "I" in Spanish
• Yo (band)
• You Inoue (1946–2003), Japanese voice actor
• Yo-Yo Ma, (born 1955), French-Chinese-American cellist
• Yo Hitoto (born 1976), Japanese pop singer
• Yoh Asakura, a character in the comic Shaman King
• "Friendship" in Chinese
• Yo in Yoism

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