Lennie is an uncommon variant of Leanne that peaked in 1921 and has grown less common since.
Lennie is predominantly a girl name. In 2025 it ranked #2,557 among girls (69) and #9,378 among boys (8) — overall #4,249 across all names. The charts below show girls and boys separately.
| Year | U.S. births | U.S. + territories | ♀ Rank | ♂ Rank |
|---|---|---|---|---|
| 2025 | 77 | 77 | #2,557 | #9,378 |
| 2024 | 57 | 57 | #3,148 | #11,791 |
| 2023 | 66 | 66 | #2,661 | — |
| 2022 | 31 | 31 | #4,538 | — |
| 2021 | 27 | 27 | #5,677 | #13,296 |
| 2020 | 26 | 26 | #5,766 | #13,277 |
| 2019 | 25 | 25 | #6,905 | #9,399 |
| 2018 | 19 | 19 | #6,409 | — |
| 2017 | 30 | 30 | #5,950 | #8,554 |
| 2016 | 13 | 13 | #12,401 | #13,416 |
| 2015 | 15 | 15 | #10,557 | #13,252 |
| 2014 | 15 | 15 | #15,732 | #8,530 |
| 2012 | 13 | 13 | #16,065 | #10,355 |
| 2011 | 6 | 6 | — | #11,703 |
| 2010 | 15 | 15 | #14,340 | #9,333 |
| 2009 | 9 | 9 | — | #8,729 |
| 2007 | 7 | 7 | — | #10,443 |
| 2005 | 6 | 6 | — | #10,935 |
| 2004 | 6 | 6 | — | #10,806 |
| 2002 | 12 | 12 | #17,007 | #9,017 |
| 2001 | 8 | 8 | — | #8,015 |
| 2000 | 6 | 6 | — | #9,824 |
| 1999 | 5 | 5 | — | #10,924 |
| 1998 | 7 | 7 | — | #8,102 |
| 1997 | 12 | — | — | #5,152 |
| 1996 | 6 | — | — | #8,560 |
| 1995 | 14 | — | #14,754 | #6,214 |
| 1994 | 11 | — | — | #5,304 |
| 1993 | 10 | — | — | #5,623 |
| 1992 | 15 | — | #14,537 | #5,487 |
| 1991 | 19 | — | #10,960 | #4,651 |
| 1990 | 6 | — | — | #7,717 |
| 1989 | 13 | — | — | #4,185 |
| 1988 | 20 | — | #12,966 | #3,455 |
| 1987 | 18 | — | #12,372 | #3,649 |
| 1986 | 22 | — | #11,958 | #2,955 |
| 1985 | 29 | — | #7,972 | #2,475 |
| 1984 | 29 | — | #8,686 | #2,339 |
| 1983 | 23 | — | #8,573 | #2,863 |
| 1982 | 15 | — | — | #3,050 |
| 1981 | 29 | — | #5,441 | #2,845 |
| 1980 | 34 | — | #6,562 | #2,190 |
| 1979 | 33 | — | #7,050 | #2,135 |
| 1978 | 33 | — | #5,784 | #2,169 |
| 1977 | 35 | — | #6,133 | #1,977 |
| 1976 | 45 | — | #5,412 | #1,591 |
| 1975 | 51 | — | #4,047 | #1,523 |
| 1974 | 67 | — | #3,635 | #1,188 |
| 1973 | 42 | — | #3,874 | #1,757 |
| 1972 | 40 | — | #5,295 | #1,588 |
| 1971 | 63 | — | #3,016 | #1,344 |
| 1970 | 49 | — | #4,152 | #1,428 |
| 1969 | 52 | — | #3,880 | #1,290 |
| 1968 | 48 | — | #6,656 | #1,176 |
| 1967 | 51 | — | #3,414 | #1,267 |
| 1966 | 67 | — | #3,337 | #1,012 |
| 1965 | 82 | — | #2,436 | #982 |
| 1964 | 85 | — | #3,443 | #909 |
| 1963 | 78 | — | #3,131 | #968 |
| 1962 | 82 | — | #2,873 | #963 |
| 1961 | 98 | — | #2,509 | #894 |
| 1960 | 103 | — | #2,224 | #882 |
| 1959 | 101 | — | #2,318 | #884 |
| 1958 | 107 | — | #2,096 | #862 |
| 1957 | 123 | — | #1,696 | #836 |
| 1956 | 92 | — | #1,952 | #964 |
| 1955 | 90 | — | #2,138 | #936 |
| 1954 | 82 | — | #1,788 | #1,090 |
| 1953 | 81 | — | #1,692 | #1,085 |
| 1952 | 80 | — | #1,626 | #1,101 |
| 1951 | 92 | — | #1,474 | #985 |
| 1950 | 77 | — | #1,400 | #1,246 |
| 1949 | 86 | — | #1,313 | #1,174 |
| 1948 | 105 | — | #1,305 | #938 |
| 1947 | 84 | — | #1,425 | #1,142 |
| 1946 | 108 | — | #1,075 | #1,026 |
| 1945 | 80 | — | #1,151 | #1,155 |
| 1944 | 63 | — | #1,286 | #1,386 |
| 1943 | 75 | — | #1,187 | #1,331 |
| 1942 | 67 | — | #1,189 | #1,515 |
| 1941 | 71 | — | #1,048 | #1,471 |
| 1940 | 69 | — | #1,092 | #1,350 |
| 1939 | 56 | — | #1,232 | #1,515 |
| 1938 | 71 | — | #1,121 | #1,238 |
| 1937 | 56 | — | #1,110 | #1,957 |
| 1936 | 79 | — | #917 | #1,407 |
| 1935 | 70 | — | #1,009 | #1,441 |
| 1934 | 57 | — | #1,090 | #1,900 |
| 1933 | 84 | — | #871 | #1,389 |
| 1932 | 79 | — | #895 | #1,817 |
| 1931 | 56 | — | #1,098 | #2,058 |
| 1930 | 72 | — | #948 | #2,380 |
| 1929 | 72 | — | #936 | #2,268 |
| 1928 | 84 | — | #941 | #1,678 |
| 1927 | 72 | — | #995 | #2,359 |
| 1926 | 87 | — | #875 | #2,145 |
| 1925 | 100 | — | #862 | #1,521 |
| 1924 | 110 | — | #788 | #1,753 |
| 1923 | 75 | — | #999 | #1,913 |
| 1922 | 101 | — | #848 | #1,487 |
| 1921 | 147 | — | #692 | #1,288 |
| 1920 | 109 | — | #793 | #1,482 |
| 1919 | 111 | — | #722 | #1,933 |
| 1918 | 103 | — | #799 | #1,570 |
| 1917 | 121 | — | #697 | #1,510 |
| 1916 | 125 | — | #644 | #2,103 |
| 1915 | 139 | — | #587 | #1,842 |
| 1914 | 109 | — | #581 | #1,827 |
| 1913 | 93 | — | #591 | #1,291 |
| 1912 | 88 | — | #556 | #1,581 |
| 1911 | 77 | — | #520 | #956 |
| 1910 | 63 | — | #591 | #906 |
| 1909 | 51 | — | #601 | #1,052 |
| 1908 | 61 | — | #462 | — |
| 1907 | 56 | — | #478 | — |
| 1906 | 50 | — | #487 | — |
| 1905 | 64 | — | #469 | #775 |
| 1904 | 65 | — | #431 | #852 |
| 1903 | 56 | — | #458 | #969 |
| 1902 | 54 | — | #448 | #1,238 |
| 1901 | 43 | — | #455 | — |
| 1900 | 58 | — | #472 | #1,250 |
| 1899 | 42 | — | #493 | #998 |
| 1898 | 46 | — | #454 | — |
| 1897 | 36 | — | #532 | #1,155 |
| 1896 | 50 | — | #437 | #1,056 |
| 1895 | 60 | — | #387 | #940 |
| 1894 | 57 | — | #401 | #828 |
| 1893 | 42 | — | #458 | #804 |
| 1892 | 44 | — | #437 | #1,029 |
| 1891 | 49 | — | #357 | — |
| 1890 | 37 | — | #419 | — |
| 1889 | 36 | — | #481 | #701 |
| 1888 | 38 | — | #462 | #731 |
| 1887 | 41 | — | #365 | #881 |
| 1886 | 12 | — | #680 | — |
| 1885 | 33 | — | #389 | #1,022 |
| 1884 | 32 | — | #354 | — |
| 1883 | 25 | — | #443 | #849 |
| 1882 | 26 | — | #413 | #901 |
| 1881 | 21 | — | #365 | — |
| 1880 | 11 | — | #533 | — |