Yomi (黄泉) is the Japanese word for the underworld.

Yomi may also refer to:

• Yomi (読み), meaning reading, such as the on'yomi and kun'yomi of kanji
• Yomi, an effeminate character in the manga Riki-Oh
• Koyomi Mizuhara, a fictional character in the anime and manga series Azumanga Daioh
• Yomi (ヨミ), a fictional character in the anime and manga series Babel II
• Yomi Isayama (黄泉), a fictional character in the manga series Ga-rei and the prequel anime series Ga-Rei: Zero
• Yomi (YuYu Hakusho) (黄泉), a fictional character in the anime and manga series YuYu Hakusho.
• Yomi (card game) a card game by David Sirlin

• Octans
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• Octans constellation
• Octant
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• Octappella
• Octarine
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• Octatonic scale
• Octatope
• Octavarium (album)
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• Octave
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• Octave Cremazie
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