Rutha is an uncommon variant of Ruth that was most common in the 1920s and has all but disappeared.
Rutha is a girl name. It last appears in U.S. records in 1975. Rutha was first reported in SSA data in 1884 and peaked in 1925 (87 births).
| Year | U.S. births | U.S. + territories | Rank |
|---|---|---|---|
| 1975 | 6 | — | #8,781 |
| 1973 | 9 | — | #5,955 |
| 1969 | 7 | — | #6,458 |
| 1968 | 7 | — | #6,121 |
| 1967 | 13 | — | #3,801 |
| 1966 | 10 | — | #4,423 |
| 1964 | 18 | — | #3,081 |
| 1963 | 15 | — | #3,438 |
| 1962 | 16 | — | #3,269 |
| 1961 | 18 | — | #3,041 |
| 1960 | 24 | — | #2,497 |
| 1959 | 28 | — | #2,183 |
| 1958 | 19 | — | #2,733 |
| 1957 | 26 | — | #2,209 |
| 1956 | 32 | — | #1,926 |
| 1955 | 33 | — | #1,870 |
| 1954 | 40 | — | #1,618 |
| 1953 | 54 | — | #1,330 |
| 1952 | 35 | — | #1,674 |
| 1951 | 46 | — | #1,391 |
| 1950 | 46 | — | #1,360 |
| 1949 | 47 | — | #1,351 |
| 1948 | 59 | — | #1,183 |
| 1947 | 61 | — | #1,159 |
| 1946 | 50 | — | #1,228 |
| 1945 | 55 | — | #1,059 |
| 1944 | 49 | — | #1,126 |
| 1943 | 48 | — | #1,175 |
| 1942 | 49 | — | #1,134 |
| 1941 | 54 | — | #1,003 |
| 1940 | 59 | — | #942 |
| 1939 | 56 | — | #951 |
| 1938 | 50 | — | #1,017 |
| 1937 | 73 | — | #807 |
| 1936 | 62 | — | #868 |
| 1935 | 67 | — | #847 |
| 1934 | 71 | — | #802 |
| 1933 | 45 | — | #1,048 |
| 1932 | 81 | — | #753 |
| 1931 | 61 | — | #884 |
| 1930 | 71 | — | #852 |
| 1929 | 82 | — | #776 |
| 1928 | 73 | — | #853 |
| 1927 | 80 | — | #823 |
| 1926 | 59 | — | #979 |
| 1925 | 87 | — | #792 |
| 1924 | 64 | — | #959 |
| 1923 | 66 | — | #905 |
| 1922 | 55 | — | #1,018 |
| 1921 | 61 | — | #953 |
| 1920 | 59 | — | #957 |
| 1919 | 49 | — | #1,037 |
| 1918 | 31 | — | #1,407 |
| 1917 | 32 | — | #1,301 |
| 1916 | 38 | — | #1,165 |
| 1915 | 33 | — | #1,221 |
| 1914 | 21 | — | #1,431 |
| 1913 | 24 | — | #1,142 |
| 1912 | 11 | — | #1,820 |
| 1911 | 15 | — | #1,225 |
| 1910 | 11 | — | #1,505 |
| 1909 | 19 | — | #958 |
| 1908 | 14 | — | #1,127 |
| 1907 | 11 | — | #1,273 |
| 1906 | 5 | — | #2,176 |
| 1905 | 10 | — | #1,289 |
| 1904 | 10 | — | #1,236 |
| 1903 | 11 | — | #1,126 |
| 1902 | 6 | — | #1,761 |
| 1901 | 6 | — | #1,641 |
| 1900 | 8 | — | #1,543 |
| 1899 | 10 | — | #1,087 |
| 1898 | 6 | — | #1,667 |
| 1897 | 6 | — | #1,523 |
| 1896 | 9 | — | #1,199 |
| 1895 | 8 | — | #1,283 |
| 1893 | 9 | — | #1,083 |
| 1891 | 6 | — | #1,315 |
| 1890 | 7 | — | #1,184 |
| 1886 | 5 | — | #1,258 |
| 1885 | 5 | — | #1,180 |
| 1884 | 7 | — | #916 |