Thomasine is an uncommon girls' name that was most common in the 1950s and has all but disappeared.
Thomasine is a girl name. It last appears in U.S. records in 1994. Thomasine was first reported in SSA data in 1909 and peaked in 1950 (67 births).
| Year | U.S. births | U.S. + territories | Rank |
|---|---|---|---|
| 1994 | 6 | — | #13,306 |
| 1990 | 5 | — | #15,090 |
| 1987 | 7 | — | #9,747 |
| 1986 | 6 | — | #10,806 |
| 1985 | 5 | — | #12,353 |
| 1984 | 6 | — | #10,316 |
| 1983 | 7 | — | #8,951 |
| 1982 | 8 | — | #8,164 |
| 1981 | 9 | — | #7,371 |
| 1980 | 7 | — | #9,022 |
| 1979 | 6 | — | #10,119 |
| 1978 | 18 | — | #4,070 |
| 1977 | 10 | — | #6,310 |
| 1976 | 19 | — | #3,663 |
| 1975 | 20 | — | #3,502 |
| 1974 | 20 | — | #3,419 |
| 1973 | 16 | — | #3,949 |
| 1972 | 15 | — | #4,074 |
| 1971 | 25 | — | #2,864 |
| 1970 | 31 | — | #2,443 |
| 1969 | 24 | — | #2,766 |
| 1968 | 16 | — | #3,441 |
| 1967 | 23 | — | #2,624 |
| 1966 | 19 | — | #2,928 |
| 1965 | 36 | — | #1,949 |
| 1964 | 38 | — | #1,946 |
| 1963 | 39 | — | #1,891 |
| 1962 | 30 | — | #2,207 |
| 1961 | 33 | — | #2,068 |
| 1960 | 38 | — | #1,853 |
| 1959 | 39 | — | #1,790 |
| 1958 | 42 | — | #1,677 |
| 1957 | 39 | — | #1,747 |
| 1956 | 60 | — | #1,349 |
| 1955 | 45 | — | #1,536 |
| 1954 | 46 | — | #1,502 |
| 1953 | 56 | — | #1,308 |
| 1952 | 56 | — | #1,283 |
| 1951 | 50 | — | #1,330 |
| 1950 | 67 | — | #1,132 |
| 1949 | 53 | — | #1,263 |
| 1948 | 55 | — | #1,237 |
| 1947 | 45 | — | #1,396 |
| 1946 | 51 | — | #1,218 |
| 1945 | 50 | — | #1,121 |
| 1944 | 56 | — | #1,052 |
| 1943 | 53 | — | #1,112 |
| 1942 | 51 | — | #1,112 |
| 1941 | 54 | — | #1,004 |
| 1940 | 37 | — | #1,216 |
| 1939 | 36 | — | #1,239 |
| 1938 | 34 | — | #1,264 |
| 1937 | 29 | — | #1,383 |
| 1936 | 30 | — | #1,343 |
| 1935 | 34 | — | #1,240 |
| 1934 | 32 | — | #1,289 |
| 1933 | 34 | — | #1,242 |
| 1932 | 38 | — | #1,175 |
| 1931 | 30 | — | #1,373 |
| 1930 | 32 | — | #1,366 |
| 1929 | 27 | — | #1,522 |
| 1928 | 31 | — | #1,421 |
| 1927 | 34 | — | #1,401 |
| 1926 | 28 | — | #1,587 |
| 1925 | 25 | — | #1,745 |
| 1924 | 29 | — | #1,604 |
| 1923 | 23 | — | #1,832 |
| 1922 | 23 | — | #1,833 |
| 1921 | 19 | — | #2,109 |
| 1920 | 25 | — | #1,703 |
| 1919 | 10 | — | #3,200 |
| 1918 | 14 | — | #2,505 |
| 1917 | 12 | — | #2,680 |
| 1916 | 12 | — | #2,641 |
| 1915 | 7 | — | #3,762 |
| 1914 | 21 | — | #1,438 |
| 1913 | 8 | — | #2,518 |
| 1910 | 5 | — | #2,753 |
| 1909 | 5 | — | #2,522 |