Arilla is a very rare variant of Ariel that was most common in the 1910s and has all but disappeared.
Arilla is a girl name. It last appears in U.S. records in 1939. Arilla was first reported in SSA data in 1888 and peaked in 1915 (11 births).
| Year | U.S. births | U.S. + territories | Rank |
|---|---|---|---|
| 1939 | 5 | — | #4,285 |
| 1936 | 6 | — | #3,722 |
| 1935 | 5 | — | #4,244 |
| 1934 | 5 | — | #4,319 |
| 1933 | 5 | — | #4,254 |
| 1929 | 8 | — | #3,408 |
| 1925 | 6 | — | #4,461 |
| 1924 | 9 | — | #3,410 |
| 1923 | 9 | — | #3,375 |
| 1920 | 5 | — | #5,016 |
| 1919 | 8 | — | #3,474 |
| 1918 | 7 | — | #3,899 |
| 1917 | 5 | — | #4,634 |
| 1916 | 7 | — | #3,579 |
| 1915 | 11 | — | #2,547 |
| 1914 | 5 | — | #3,648 |
| 1912 | 8 | — | #2,166 |
| 1911 | 8 | — | #1,801 |
| 1910 | 10 | — | #1,528 |
| 1909 | 5 | — | #2,232 |
| 1907 | 7 | — | #1,651 |
| 1905 | 8 | — | #1,428 |
| 1901 | 5 | — | #1,694 |
| 1900 | 7 | — | #1,580 |
| 1891 | 6 | — | #1,226 |
| 1888 | 5 | — | #1,292 |