Thecla is a very rare girls' name that was most common in the 1910s and has all but disappeared.
Thecla is a girl name. It last appears in U.S. records in 1986. Thecla was first reported in SSA data in 1888 and peaked in 1917 (18 births).
| Year | U.S. births | U.S. + territories | Rank |
|---|---|---|---|
| 1986 | 5 | — | #12,697 |
| 1962 | 6 | — | #6,506 |
| 1959 | 7 | — | #5,520 |
| 1958 | 6 | — | #6,045 |
| 1957 | 5 | — | #6,928 |
| 1955 | 5 | — | #6,642 |
| 1948 | 5 | — | #5,969 |
| 1939 | 5 | — | #4,885 |
| 1936 | 6 | — | #4,129 |
| 1935 | 5 | — | #4,829 |
| 1931 | 5 | — | #4,901 |
| 1930 | 10 | — | #3,034 |
| 1928 | 6 | — | #4,671 |
| 1926 | 5 | — | #5,539 |
| 1925 | 7 | — | #4,387 |
| 1924 | 12 | — | #2,957 |
| 1923 | 6 | — | #4,914 |
| 1922 | 11 | — | #3,133 |
| 1921 | 7 | — | #4,410 |
| 1920 | 10 | — | #3,316 |
| 1919 | 10 | — | #3,199 |
| 1918 | 13 | — | #2,661 |
| 1917 | 18 | — | #1,987 |
| 1916 | 11 | — | #2,813 |
| 1915 | 10 | — | #2,878 |
| 1914 | 9 | — | #2,615 |
| 1913 | 5 | — | #3,650 |
| 1912 | 9 | — | #2,125 |
| 1911 | 11 | — | #1,535 |
| 1908 | 5 | — | #2,397 |
| 1907 | 5 | — | #2,360 |
| 1906 | 5 | — | #2,190 |
| 1902 | 7 | — | #1,576 |
| 1900 | 5 | — | #2,197 |
| 1899 | 6 | — | #1,575 |
| 1898 | 6 | — | #1,678 |
| 1895 | 7 | — | #1,416 |
| 1888 | 5 | — | #1,456 |