Alto is a rare variant of Aldo that was most common in the 1910s and has all but disappeared.
Alto is predominantly a boy name. It last appears in U.S. records in 1991. Alto first appears in 1881 and peaked in 1919 (20 births).
| Year | U.S. births | U.S. + territories | ♀ Rank | ♂ Rank |
|---|---|---|---|---|
| 1991 | 5 | — | — | #8,269 |
| 1981 | 6 | — | — | #5,497 |
| 1976 | 6 | — | — | #4,953 |
| 1970 | 7 | — | — | #3,852 |
| 1963 | 6 | — | — | #3,657 |
| 1962 | 6 | — | — | #3,650 |
| 1960 | 5 | — | — | #4,049 |
| 1958 | 6 | — | — | #3,567 |
| 1957 | 8 | — | — | #3,029 |
| 1956 | 8 | — | — | #2,980 |
| 1955 | 7 | — | — | #3,207 |
| 1953 | 6 | — | — | #3,432 |
| 1952 | 6 | — | — | #3,386 |
| 1951 | 9 | — | — | #2,668 |
| 1950 | 6 | — | — | #3,333 |
| 1949 | 10 | — | — | #2,457 |
| 1948 | 5 | — | — | #3,690 |
| 1946 | 5 | — | — | #3,540 |
| 1945 | 8 | — | — | #2,575 |
| 1943 | 8 | — | — | #2,743 |
| 1942 | 8 | — | — | #2,715 |
| 1940 | 11 | — | — | #2,182 |
| 1939 | 5 | — | — | #3,490 |
| 1938 | 6 | — | — | #3,185 |
| 1937 | 6 | — | — | #3,183 |
| 1936 | 6 | — | — | #3,158 |
| 1935 | 11 | — | — | #2,249 |
| 1934 | 10 | — | — | #2,397 |
| 1933 | 8 | — | — | #2,742 |
| 1932 | 8 | — | — | #2,853 |
| 1931 | 7 | — | — | #3,103 |
| 1930 | 10 | — | — | #2,614 |
| 1929 | 10 | — | — | #2,598 |
| 1928 | 8 | — | — | #3,085 |
| 1927 | 14 | — | — | #2,200 |
| 1926 | 19 | — | #4,322 | #2,304 |
| 1925 | 15 | — | — | #2,094 |
| 1924 | 21 | — | #3,150 | #2,646 |
| 1923 | 15 | — | — | #2,124 |
| 1922 | 12 | — | — | #2,491 |
| 1921 | 15 | — | — | #2,155 |
| 1920 | 16 | — | — | #2,054 |
| 1919 | 20 | — | — | #1,697 |
| 1918 | 16 | — | — | #2,002 |
| 1917 | 21 | — | #4,615 | #1,902 |
| 1916 | 17 | — | — | #1,774 |
| 1915 | 18 | — | — | #1,662 |
| 1914 | 16 | — | — | #1,549 |
| 1913 | 12 | — | #3,205 | #2,279 |
| 1912 | 13 | — | — | #1,356 |
| 1911 | 12 | — | #2,479 | #1,392 |
| 1904 | 6 | — | — | #1,066 |
| 1900 | 5 | — | — | #1,318 |
| 1899 | 6 | — | — | #933 |
| 1897 | 8 | — | — | #789 |
| 1895 | 8 | — | — | #800 |
| 1894 | 5 | — | — | #1,084 |
| 1892 | 6 | — | — | #959 |
| 1890 | 7 | — | — | #815 |
| 1889 | 6 | — | — | #881 |
| 1887 | 5 | — | — | #933 |
| 1886 | 6 | — | — | #848 |
| 1881 | 5 | — | — | #869 |