Total babies named Masashi (all years): 146
| Year | Boys (count / rank / %) |
|---|---|
| 1995 | 5 / #9788 / 0.000% |
| 1991 | 5 / #9114 / 0.000% |
| 1989 | 8 / #6022 / 0.000% |
| 1986 | 5 / #7436 / 0.000% |
| 1930 | 7 / #3485 / 0.001% |
| 1929 | 9 / #2891 / 0.001% |
| 1928 | 5 / #4520 / 0.000% |
| 1927 | 7 / #3670 / 0.001% |
| 1926 | 5 / #4592 / 0.000% |
| 1924 | 13 / #2427 / 0.001% |
| Year | Boys (count / rank / %) |
|---|---|
| 1923 | 7 / #3691 / 0.001% |
| 1922 | 6 / #4146 / 0.001% |
| 1921 | 13 / #2459 / 0.001% |
| 1920 | 9 / #3121 / 0.001% |
| 1919 | 5 / #4569 / 0.001% |
| 1918 | 10 / #2816 / 0.001% |
| 1917 | 8 / #3112 / 0.001% |
| 1916 | 6 / #3745 / 0.001% |
| 1915 | 8 / #2978 / 0.001% |
| 1913 | 5 / #3105 / 0.001% |