Japanese Names That Mean Demon

Oni (鬼) and Akuma (悪魔) are the two direct Japanese words for demon, and both are genuine, well established terms, though neither is conventionally used as a real personal given name the way you might name a child. Where the demon kanji 鬼 does show up in real, documented names is mainly in surnames, like Onizuka (鬼塚, “demon mound”) and Kitō (鬼頭, one reading of which uses “demon” combined with “head”), both real Japanese family names.

Beyond the direct words and surnames, Japanese folklore offers a rich set of genuine demon and demon-adjacent figures, Shuten-dōji, Enma-Ō, and Tengu among them, that are documented parts of mythology and culture rather than everyday given names. This guide sticks to these real categories and flags the very large amount of invented content that fills out most long “demon name” lists online.

Why Direct “Demon” Names Are Uncommon as Given Names

• Oni (鬼) and Akuma (悪魔) are real, everyday words, but using either directly as a person’s given name would read as highly unusual, similar to naming a child “Demon” in English
• The demon kanji appears far more naturally in surnames, where it often carries a more neutral, place-based meaning, than in given names
• Japanese folklore has many named demon and yokai figures, but these are established mythological or fictional characters rather than personal name choices
• A large share of long online lists invent compound phrases (pairing “demon” with other dark-sounding words) that aren’t documented real names

Quick Checklist Before You Choose

• Decide whether you want the literal word, a real surname, or a reference to a specific folkloric figure
• Say the name aloud a few times to check pronunciation
• Consider whether the name is for a real person, a character, or a creative project, since that changes what’s appropriate
• Look into whether a specific name has documented real-world use versus appearing only in generated lists
• If possible, confirm with a native speaker or a dedicated Japanese naming resource

The Direct Words for Demon

• Oni: the everyday Japanese word for “demon” or “ogre,” written 鬼. A real, well known term, but not conventionally used as a personal given name.
• Akuma: the Japanese word for “demon” or “devil,” written 悪魔. Also a real, direct word rather than a typical given name.

Real Surnames Built From the Demon Kanji

• Onizuka: surname written 鬼塚, combining 鬼 (“demon”) with 塚 (“mound,” used to mean a grave or burial mound).
• Kitō: surname that can be written 鬼頭, combining 鬼 (“demon, ghost”) with 頭 (“head”), among other unrelated kanji spellings for the same sound.
• Kuki: surname that can be written 久鬼, combining 久 (“long time, ago”) with 鬼 (“demon, ghost, spirit”), among other spellings using unrelated kanji.
• Onimaru: surname written 鬼丸, combining 鬼 (“demon”) with 丸 (“round, entirely”).
• Onitsuka: surname written 鬼束, combining 鬼 (“demon”) with 束 (“bundle, to bind”).

Genuine Demon and Yokai Figures in Japanese Folklore

• Shuten-dōji: one of the most famous demons in Japanese folklore and mythology, a giant oni said to have lived in the mountains near Kyoto; his name is often translated as “Sake-drinking Child.”
• Ibaraki-dōji: a notable female oni figure in Japanese folklore, closely associated with Shuten-dōji in traditional tales.
• Enma-Ō: the king of hell and judge of the dead in Japanese Buddhist tradition, a significant figure in Japanese religious folklore.
• Tengu: powerful mountain spirits in Japanese folklore, known for martial skill and supernatural ability; not always considered purely demonic, sometimes serving as protective or trickster figures.
• Yasha: a demon or spirit figure in Japanese Buddhist tradition, adapted from the Sanskrit yaksha.
• Hannya: a mask and figure representing a jealous, vengeful female demon in Japanese Noh theater, whose name ironically derives from a Buddhist term for “wisdom.”

A Word of Caution About Long “Demon Name” Lists

This topic has an extremely high rate of invented content. Several long lists present compound phrases like Ankokuoni (“dark demon”), Kurayami no Oni (“demon of darkness”), or Yamion (“darkness demon”) as if they were real given names, when they read more like constructed descriptive phrases than names any real person or documented character would carry. If a “demon name” isn’t Oni, Akuma, a real surname like Onizuka, or an established folkloric figure like Shuten-dōji, treat it as invented rather than historical or in common use.

How to Narrow Down Your Shortlist

1. Decide your context – a real surname, a folkloric reference, or a name for a character or creative project
2. Filter by sound – test how the name flows with other names in your project
3. Check the source – Onizuka, Kitō, and figures like Shuten-dōji are documented; be skeptical of anything else
4. Add a twist – referencing a specific, real folkloric figure adds genuine depth
5. Say it aloud – try the full name in a sentence
6. Ask a native speaker if possible – to confirm how a name reads for its intended use

Styling Tips for a Standout Choice

• Onizuka and Kitō are the clearest documented surname choices
• Shuten-dōji and Enma-Ō offer genuine mythological weight for a character or story
• Save invented compound phrases for fiction or creative projects rather than treating them as real names
• Consider the cultural weight of these figures, some are genuinely feared, others are more nuanced tricksters or protectors
• Trust your own reaction over what is trending on generic name lists

FAQs

Is Oni ever used as a real person’s given name?

Very rarely, if at all. It’s a genuine, everyday word for demon or ogre, but using it directly as a given name would read as highly unusual in Japan.

Is there a real Japanese surname that means demon?

Yes. Onizuka (“demon mound”) and Kitō (“demon head,” in one reading) are both documented, real Japanese surnames.

Who is the most famous demon in Japanese folklore?

Shuten-dōji is widely considered one of the most famous oni in Japanese mythology, associated with legendary stories set near Kyoto.

What is the difference between oni and yokai?

Oni specifically refers to demon or ogre-like figures, while yokai is a broader category covering many kinds of supernatural beings in Japanese folklore, including but not limited to oni.

Why do so many “demon name” lists have hundreds of entries?

Most long lists combine a small number of genuine words and folkloric figures with invented compound phrases built by pairing “demon” or “dark” with other words, largely for creative writing or search traffic.

How do I make the name feel more unique?

Reference a specific, less commonly cited folkloric figure like Ibaraki-dōji or Yasha, or pair a real surname like Onizuka with careful, respectful context for your project.

Final Thoughts

Oni and Akuma are the genuine words for demon, real surnames like Onizuka and Kitō carry the demon kanji into documented family names, and Japanese folklore offers real, storied figures like Shuten-dōji and Enma-Ō. Most of what fills out long “demon name” lists online is invented compound phrasing rather than real names, so it’s worth sticking to these documented categories if accuracy matters to you.