Lousie is a very rare variant of Louise that was most common in the 1910s and has all but disappeared.
Lousie is a girl name. It last appears in U.S. records in 1962. Lousie first appears in 1913 and peaked in 1918 (12 births).
| Year | U.S. births | U.S. + territories | Rank |
|---|---|---|---|
| 1962 | 6 | — | #6,273 |
| 1961 | 6 | — | #6,267 |
| 1954 | 5 | — | #6,248 |
| 1943 | 7 | — | #4,030 |
| 1937 | 5 | — | #4,644 |
| 1936 | 6 | — | #3,964 |
| 1935 | 8 | — | #3,328 |
| 1930 | 6 | — | #4,330 |
| 1929 | 7 | — | #3,897 |
| 1928 | 5 | — | #5,128 |
| 1927 | 9 | — | #3,443 |
| 1926 | 9 | — | #3,422 |
| 1925 | 8 | — | #3,890 |
| 1922 | 9 | — | #3,542 |
| 1921 | 5 | — | #5,571 |
| 1920 | 5 | — | #5,430 |
| 1918 | 12 | — | #2,763 |
| 1916 | 6 | — | #4,186 |
| 1915 | 7 | — | #3,639 |
| 1914 | 5 | — | #3,954 |
| 1913 | 6 | — | #3,043 |