| Rank | Name | How many people |
|---|---|---|
| 1 | 佐藤 | Roughly 1,871,000 |
| 2 | 鈴木 | Roughly 1,797,000 |
| 3 | 高橋 | Roughly 1,411,000 |
| 4 | 田中 | Roughly 1,335,000 |
| 5 | 伊藤 | Roughly 1,074,000 |
| 6 | 渡辺 | Roughly 1,063,000 |
| 7 | 山本 | Roughly 1,050,000 |
| 8 | 中村 | Roughly 1,044,000 |
| 9 | 小林 | Roughly 1,028,000 |
| 10 | 加藤 | Roughly 887,000 |
| 11 | 吉田 | Roughly 829,000 |
| 12 | 山田 | Roughly 814,000 |
| 13 | 佐々木 | Roughly 673,000 |
| 14 | 山口 | Roughly 643,000 |
| 15 | 松本 | Roughly 627,000 |
| 16 | 井上 | Roughly 614,000 |
| 17 | 木村 | Roughly 576,000 |
| 18 | 林 | Roughly 545,000 |
| 19 | 斎藤 | Roughly 542,000 |
| 20 | 清水 | Roughly 532,000 |
Data from myoji-yurai.net.