Primarily a boy's name · 100% boys
→ See names similar to Masao · Popular names of the 1910s · Boys names starting with M
Rank is among all boys' names registered that year.
| Year | Babies | Rank |
|---|---|---|
| 1907 | 5 | #1,474 |
| 1908 | 5 | #1,528 |
| 1911 | 5 | #1,912 |
| 1912 | 23 | #959 |
| 1913 | 28 | #944 |
| 1914 | 40 | #862 |
| 1915 | 42 | #975 |
| 1916 | 57 | #830 |
| 1917 | 61 | #816 |
| 1918 | 81 | #705 |
| 1919 | 63 | #827 |
| 1920 | 51 | #969 |
| 1921 | 60 | #906 |
| 1922 | 68 | #825 |
| 1923 | 57 | #910 |
| 1924 | 59 | #913 |
| 1925 | 36 | #1,196 |
| 1926 | 34 | #1,258 |
| 1927 | 33 | #1,286 |
| 1928 | 31 | #1,319 |
| 1929 | 24 | #1,508 |
| 1930 | 24 | #1,519 |
| 1931 | 10 | #2,585 |
| 1932 | 19 | #1,693 |
| 1933 | 13 | #2,058 |
| 1934 | 8 | #2,875 |
| 1935 | 12 | #2,203 |
| 1936 | 7 | #3,061 |
| 1937 | 10 | #2,422 |
| 1938 | 11 | #2,276 |
| 1940 | 5 | #3,774 |
| 1941 | 6 | #3,375 |
| 1960 | 5 | #4,404 |
| 1982 | 7 | #5,398 |
| 2011 | 8 | #9,319 |
| 2013 | 5 | #13,364 |
| 2019 | 5 | #13,420 |