Marillyn is a rare variant of Marilyn that was most common in the 1920s and has all but disappeared.
Marillyn is a girl name. It last appears in U.S. records in 1947. Marillyn first appears in 1920 and peaked in 1927 (40 births).
| Year | U.S. births | U.S. + territories | Rank |
|---|---|---|---|
| 1947 | 9 | — | #3,916 |
| 1946 | 10 | — | #3,360 |
| 1945 | 5 | — | #4,996 |
| 1943 | 5 | — | #5,107 |
| 1942 | 5 | — | #5,099 |
| 1941 | 6 | — | #4,255 |
| 1940 | 8 | — | #3,406 |
| 1938 | 10 | — | #2,862 |
| 1937 | 10 | — | #2,870 |
| 1936 | 11 | — | #2,636 |
| 1935 | 17 | — | #1,969 |
| 1934 | 17 | — | #1,971 |
| 1933 | 17 | — | #1,946 |
| 1932 | 33 | — | #1,286 |
| 1931 | 24 | — | #1,578 |
| 1930 | 19 | — | #1,915 |
| 1929 | 33 | — | #1,324 |
| 1928 | 33 | — | #1,356 |
| 1927 | 40 | — | #1,248 |
| 1926 | 29 | — | #1,529 |
| 1925 | 23 | — | #1,827 |
| 1924 | 25 | — | #1,749 |
| 1923 | 20 | — | #2,003 |
| 1922 | 14 | — | #2,559 |
| 1921 | 9 | — | #3,577 |
| 1920 | 5 | — | #5,478 |