Kathlyn is an uncommon variant of Kathleen that peaked in 1951 and has grown less common since.
Kathlyn is a girl name. In 2025 it ranked #4,818 for girl births in the United States (and #8,357 across all names), given to 28 babies. Kathlyn first appears in 1897 and peaked in 1951 (125 births).
| Year | U.S. births | U.S. + territories | Rank |
|---|---|---|---|
| 2025 | 28 | 28 | #4,818 |
| 2024 | 63 | 63 | #2,735 |
| 2023 | 9 | 9 | #10,736 |
| 2022 | 6 | 6 | #14,443 |
| 2021 | 10 | 10 | #9,919 |
| 2020 | 9 | 9 | #10,687 |
| 2019 | 11 | 11 | #9,415 |
| 2018 | 13 | 13 | #8,364 |
| 2017 | 12 | 12 | #9,056 |
| 2016 | 13 | 13 | #8,630 |
| 2015 | 22 | 22 | #5,933 |
| 2014 | 12 | 12 | #9,252 |
| 2013 | 19 | 19 | #6,589 |
| 2012 | 15 | 15 | #8,019 |
| 2011 | 20 | 20 | #6,442 |
| 2010 | 15 | 15 | #8,085 |
| 2009 | 31 | 31 | #4,744 |
| 2008 | 23 | 23 | #6,033 |
| 2007 | 34 | 34 | #4,419 |
| 2006 | 42 | 42 | #3,696 |
| 2005 | 39 | 39 | #3,772 |
| 2004 | 44 | 44 | #3,419 |
| 2003 | 41 | 41 | #3,501 |
| 2002 | 34 | 34 | #3,850 |
| 2001 | 42 | 42 | #3,279 |
| 2000 | 53 | 53 | #2,761 |
| 1999 | 38 | 38 | #3,348 |
| 1998 | 33 | 33 | #3,604 |
| 1997 | 35 | — | #3,325 |
| 1996 | 43 | — | #2,823 |
| 1995 | 46 | — | #2,667 |
| 1994 | 66 | — | #2,091 |
| 1993 | 54 | — | #2,362 |
| 1992 | 76 | — | #1,863 |
| 1991 | 45 | — | #2,682 |
| 1990 | 53 | — | #2,358 |
| 1989 | 46 | — | #2,500 |
| 1988 | 53 | — | #2,169 |
| 1987 | 47 | — | #2,290 |
| 1986 | 50 | — | #2,135 |
| 1985 | 33 | — | #2,830 |
| 1984 | 29 | — | #3,017 |
| 1983 | 34 | — | #2,619 |
| 1982 | 32 | — | #2,865 |
| 1981 | 28 | — | #3,104 |
| 1980 | 30 | — | #2,954 |
| 1979 | 18 | — | #4,124 |
| 1978 | 26 | — | #3,044 |
| 1977 | 19 | — | #3,824 |
| 1976 | 20 | — | #3,454 |
| 1975 | 25 | — | #2,912 |
| 1974 | 22 | — | #3,160 |
| 1973 | 19 | — | #3,397 |
| 1972 | 23 | — | #2,934 |
| 1971 | 26 | — | #2,762 |
| 1970 | 25 | — | #2,816 |
| 1969 | 30 | — | #2,376 |
| 1968 | 38 | — | #1,956 |
| 1967 | 32 | — | #2,100 |
| 1966 | 34 | — | #1,996 |
| 1965 | 23 | — | #2,569 |
| 1964 | 52 | — | #1,584 |
| 1963 | 35 | — | #1,995 |
| 1962 | 37 | — | #1,905 |
| 1961 | 48 | — | #1,634 |
| 1960 | 53 | — | #1,530 |
| 1959 | 61 | — | #1,375 |
| 1958 | 48 | — | #1,548 |
| 1957 | 66 | — | #1,311 |
| 1956 | 80 | — | #1,165 |
| 1955 | 77 | — | #1,140 |
| 1954 | 80 | — | #1,104 |
| 1953 | 110 | — | #898 |
| 1952 | 102 | — | #916 |
| 1951 | 125 | — | #796 |
| 1950 | 102 | — | #878 |
| 1949 | 116 | — | #809 |
| 1948 | 117 | — | #797 |
| 1947 | 107 | — | #848 |
| 1946 | 88 | — | #888 |
| 1945 | 65 | — | #960 |
| 1944 | 72 | — | #901 |
| 1943 | 52 | — | #1,118 |
| 1942 | 36 | — | #1,358 |
| 1941 | 42 | — | #1,156 |
| 1940 | 33 | — | #1,305 |
| 1939 | 34 | — | #1,283 |
| 1938 | 22 | — | #1,676 |
| 1937 | 30 | — | #1,344 |
| 1936 | 27 | — | #1,429 |
| 1935 | 35 | — | #1,214 |
| 1934 | 19 | — | #1,806 |
| 1933 | 18 | — | #1,875 |
| 1932 | 24 | — | #1,583 |
| 1931 | 26 | — | #1,475 |
| 1930 | 33 | — | #1,335 |
| 1929 | 39 | — | #1,204 |
| 1928 | 33 | — | #1,351 |
| 1927 | 39 | — | #1,269 |
| 1926 | 39 | — | #1,251 |
| 1925 | 27 | — | #1,626 |
| 1924 | 58 | — | #1,009 |
| 1923 | 63 | — | #925 |
| 1922 | 67 | — | #893 |
| 1921 | 81 | — | #819 |
| 1920 | 66 | — | #900 |
| 1919 | 65 | — | #873 |
| 1918 | 77 | — | #818 |
| 1917 | 73 | — | #809 |
| 1916 | 86 | — | #731 |
| 1915 | 108 | — | #633 |
| 1914 | 101 | — | #559 |
| 1913 | 28 | — | #1,032 |
| 1912 | 12 | — | #1,665 |
| 1911 | 15 | — | #1,206 |
| 1909 | 10 | — | #1,416 |
| 1908 | 9 | — | #1,488 |
| 1907 | 5 | — | #2,215 |
| 1905 | 8 | — | #1,479 |
| 1904 | 9 | — | #1,311 |
| 1903 | 8 | — | #1,383 |
| 1902 | 5 | — | #1,914 |
| 1901 | 10 | — | #1,101 |
| 1900 | 12 | — | #1,137 |
| 1899 | 7 | — | #1,331 |
| 1898 | 8 | — | #1,318 |
| 1897 | 5 | — | #1,664 |