Top Japanese Names

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 Roughly 545,000
19 斎藤 Roughly 542,000
20 清水 Roughly 532,000

Data from myoji-yurai.net.