Masao
- Last seen for boys in 2019 at #12,145
- Peak · boys
- 1918 · 81 births
- Debut · boys
- 5 births
- In top 100 · boys
- neverof 146 years
- Total births · boys
- 1,018since 1907
Masao over time
boys
Rank among boys' names. Masao has never cracked the top 700 here.
Hover or use arrow keys to read values by year; click or press Enter to open that year.
Gaps mean fewer than 5 babies received the name that year, so the SSA doesn't publish it.
Show data table
| Year | boys | |
|---|---|---|
| rank | births | |
| 2025 | — | |
| 2024 | — | |
| 2023 | — | |
| 2022 | — | |
| 2021 | — | |
| 2020 | — | |
| 2019 | #12,145 | 5 |
| 2018 | — | |
| 2017 | — | |
| 2016 | — | |
| 2015 | — | |
| 2014 | — | |
| 2013 | #12,136 | 5 |
| 2012 | — | |
| 2011 | #8,767 | 8 |
| 2010 | — | |
| 2009 | — | |
| 2008 | — | |
| 2007 | — | |
| 2006 | — | |
| 2005 | — | |
| 2004 | — | |
| 2003 | — | |
| 2002 | — | |
| 2001 | — | |
| 2000 | — | |
| 1999 | — | |
| 1998 | — | |
| 1997 | — | |
| 1996 | — | |
| 1995 | — | |
| 1994 | — | |
| 1993 | — | |
| 1992 | — | |
| 1991 | — | |
| 1990 | — | |
| 1989 | — | |
| 1988 | — | |
| 1987 | — | |
| 1986 | — | |
| 1985 | — | |
| 1984 | — | |
| 1983 | — | |
| 1982 | #5,003 | 7 |
| 1981 | — | |
| 1980 | — | |
| 1979 | — | |
| 1978 | — | |
| 1977 | — | |
| 1976 | — | |
| 1975 | — | |
| 1974 | — | |
| 1973 | — | |
| 1972 | — | |
| 1971 | — | |
| 1970 | — | |
| 1969 | — | |
| 1968 | — | |
| 1967 | — | |
| 1966 | — | |
| 1965 | — | |
| 1964 | — | |
| 1963 | — | |
| 1962 | — | |
| 1961 | — | |
| 1960 | #4,038 | 5 |
| 1959 | — | |
| 1958 | — | |
| 1957 | — | |
| 1956 | — | |
| 1955 | — | |
| 1954 | — | |
| 1953 | — | |
| 1952 | — | |
| 1951 | — | |
| 1950 | — | |
| 1949 | — | |
| 1948 | — | |
| 1947 | — | |
| 1946 | — | |
| 1945 | — | |
| 1944 | — | |
| 1943 | — | |
| 1942 | — | |
| 1941 | #3,133 | 6 |
| 1940 | #3,459 | 5 |
| 1939 | — | |
| 1938 | #2,185 | 11 |
| 1937 | #2,332 | 10 |
| 1936 | #2,854 | 7 |
| 1935 | #2,127 | 12 |
| 1934 | #2,742 | 8 |
| 1933 | #1,997 | 13 |
| 1932 | #1,651 | 19 |
| 1931 | #2,471 | 10 |
| 1930 | #1,496 | 24 |
| 1929 | #1,480 | 24 |
| 1928 | #1,293 | 31 |
| 1927 | #1,267 | 33 |
| 1926 | #1,242 | 34 |
| 1925 | #1,184 | 36 |
| 1924 | #907 | 59 |
| 1923 | #905 | 57 |
| 1922 | #818 | 68 |
| 1921 | #901 | 60 |
| 1920 | #965 | 51 |
| 1919 | #822 | 63 |
| 1918 | #700 | 81 |
| 1917 | #804 | 61 |
| 1916 | #824 | 57 |
| 1915 | #962 | 42 |
| 1914 | #855 | 40 |
| 1913 | #930 | 28 |
| 1912 | #935 | 23 |
| 1911 | #1,740 | 5 |
| 1910 | — | |
| 1909 | — | |
| 1908 | #1,373 | 5 |
| 1907 | #1,345 | 5 |
| 1906 | — | |
| 1905 | — | |
| 1904 | — | |
| 1903 | — | |
| 1902 | — | |
| 1901 | — | |
| 1900 | — | |
| 1899 | — | |
| 1898 | — | |
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| 1896 | — | |
| 1895 | — | |
| 1894 | — | |
| 1893 | — | |
| 1892 | — | |
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| 1890 | — | |
| 1889 | — | |
| 1888 | — | |
| 1887 | — | |
| 1886 | — | |
| 1885 | — | |
| 1884 | — | |
| 1883 | — | |
| 1882 | — | |
| 1881 | — | |
| 1880 | — | |
First appearance
1907
The first year at least five boys were named Masao! It came in at #1,345, and was given to 5 baby boys.
Quietest stretch: 1907–1911, when fewer than 6 boys a year got the name.
Where Masao is popular in 2025
No state had 5 or more boys named Masao in 2025, so the SSA doesn't publish it for any state.
See more about Masao
Momentum · boys
Faded out
- Not published in 2025; last seen 2019
- Biggest jump: 805 spots in 1912
- Biggest drop: 277 spots in 1925
Rise & fade · boys
11 yrs to peak
- Debuted 1907
- Peaked 1918 at #700 (81 births)
- Births halved by 1925, 7 yrs later
Top of the charts · boys
Top 1,000 for 13 yrs
- Top 10: never
- Top 100: never
- Top 1,000: 13 yrs · run 1912–1924
Share of babies · boys
1 in 12,512
- Highest: 1 in 12,512 boys born in 1918 were named Masao (0.01%)
- Latest: 1 in 358,843 boys born in 2019 (0.00%)
Era · boys
The 1920s
- 44.5% of all boys named Masao (453) were born in this decade
Show by decade
| Decade | Births | Best rank | Avg rank |
|---|---|---|---|
| 1900s | 10 | #1,345 (1907) | #1,359 |
| 1910s | 400 | #700 (1918) | #952 |
| 1920s | 453 | #818 (1922) | #1,096 |
| 1930s | 114 | #1,496 (1930) | #2,206 |
| 1940s | 11 | #3,133 (1941) | #3,296 |
| 1950s | 0 | — | — |
| 1960s | 5 | #4,038 (1960) | #4,038 |
| 1970s | 0 | — | — |
| 1980s | 7 | #5,003 (1982) | #5,003 |
| 1990s | 0 | — | — |
| 2000s | 0 | — | — |
| 2010s | 18 | #8,767 (2011) | #11,016 |
All figures count published births only (names given to at least 5 boys in a year). Registrations before 1937 are incomplete, so early shares and totals run low.
Want to check a specific year?
See where Masao ranked and which names it was up against. Click a point on the chart, or pick a year: