苗字ジェネレーター
AIで現実的な苗字を生成 — 様々な文化と起源にわたる姓、それぞれの意味が説明されています。キャラクター、筆名、ワールドビルディングに最適です。
入力
オプション。テーマを自分の言葉で調整してください（最大500文字）。
オフにすると、名前のリストのみになります — 意味やフレーバーテキストはなし。
名前1つあたり2クレジット。取得した名前のみクレジットが消費されます。
出力
| 名前 | 説明 |
|---|---|
| No data yet | |
このツールを使う他の方法
REST API
curl -X POST https://api.iotools.cloud/v1/tool/name-generator/last-names \
-H "Authorization: Bearer YOUR_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"complexity": "balanced",
"length": "medium",
"context": "",
"count": "5",
"describe": "true"
}'ご自身のアカウントのキーに差し替えてください。ツールのフィールドがそのままリクエストボディになります——ラッパーはありません。
AIエージェントに依頼する
Use the IOTools `name-generator__last-names` tool (Last Name Generator) on this input:
YOUR_INPUT_HEREIOTools MCPサーバーに接続された任意のエージェントにこれを貼り付け、入力内容を追加してください。
| API/MCP 1回あたりの費用 | 5クレジットから |
|---|---|
| 無料プランのAPI/MCP上限^ | 月30クレジット |
| クレジットが足りませんか? | 料金を見る |
^ 無料プランで、このツールにAPI/MCP経由で月に使える上限額です。クレジットパックを購入すると、Builderと同様にこの上限はなくなります。
次の方法でも利用可能
ガイド
A last name carries more information than a first: it hints at where a family came from, what they once did, and sometimes who they descended from. Smith was a job. Johnson was a father. Hill was a place. This generator produces surnames across all those patterns and tells you which one you're looking at, so the name fits the character rather than just filling a slot.
Give it a heritage, a sound or a first name to pair with, and it comes back with a shortlist — each surname explained by origin and meaning.
How to use it
Length shifts the register. Short leans toward blunt, old English-style names (Ash, Vane, Crowe). Long gives you the multi-syllable, often continental surnames (Castellano, Ravensworth, Aleksandrov).
Complexity decides how far the spelling strays from what an English reader sounds out at a glance. Simple stays phonetic; elaborate brings in the accents, silent letters and consonant clusters of names that travelled.
Use extra context to aim it:
- "Italian surnames, common but not cliché"
- "goes with the first name Eleanor, English, slightly aristocratic"
- "occupational surnames, medieval feel"
- "Scandinavian, patronymic, for a fantasy novel"
Are these real surnames or invented ones?
A mix, and which you get depends on what you ask for. Request "common Irish surnames" and you'll mostly get real ones; ask for something distinctive or fantasy-flavoured and the generator will build plausible-sounding names that follow the pattern without necessarily existing. If you need a genuinely attested surname — for genealogy, say — verify it against a surname database, and treat the reported meaning as a strong guess rather than settled etymology, since the model can attach a tidy origin story to a name that never had one.
Can I use a generated surname for a character or pen name?
Yes. Surnames aren't protected by copyright, so a name the generator produces is yours to use for a character, a pseudonym or a game. The one caution is real people: a distinctive surname paired with a common first name can accidentally match a living person, so a quick search before you publish is worth the minute.
How do I get a surname that matches a first name I already have?
Put the first name in the context box and say what you're after — "surname for Priya, modern British Indian" or "pairs with Cormac, Irish." The generator will weight its choices toward names that sit naturally alongside it in rhythm and origin.