Meaning and history
German diminutive of Adelheid. It is the name of the title character in the children's novel Heidi (1880) by the Swiss author Johanna Spyri, and it became used in the English-speaking world shortly after the 1937 film adaptation starring Shirley Temple.
Heidi rose from #345 to #340 for girls between 2024 and 2025. Its highest annual birth count came in 1972, with 4,723 births.